Progress 12/16/09 to 12/15/14
Outputs Target Audience: Cowpea (Southernpea) commercial producers, processors (canning and freezing), seed producers, small scale producers (truck farmers), home gardeners, and consumers. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? Graduate students were trained in the art and science of cowpea breeding. How have the results been disseminated to communities of interest? On-site visits were conducted with several cowpea producers. What do you plan to do during the next reporting period to accomplish the goals? Growout of Program germplasm will be a focus as well as the release and write-up of promising selections.
Impacts What was accomplished under these goals?
Two promising selections were identified and seed increased. Large commercial trials of these selections were conducted.
Publications
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Progress 10/01/13 to 09/30/14
Outputs Target Audience: Cowpea (Southernpa) commercial producers, truck farmers (less than 100 acres), processors (canning and freezing), seed producers, and home gardeners. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? A master degree was completed which provided training in plant breeding. How have the results been disseminated to communities of interest? Interaction with seed producers in their commercial evaluations of elite Program selections. What do you plan to do during the next reporting period to accomplish the goals? Growout of more Program germplasm and writeup of two cowpea releases.
Impacts What was accomplished under these goals?
Maintenance growout of program germplasm was initiated.
Publications
- Type:
Theses/Dissertations
Status:
Published
Year Published:
2014
Citation:
Alexander, Tulle Wayne. 2014. Genetic Variability for Low Phosphorous Tolerance in Cowpea. (Thesis).
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Progress 01/01/13 to 09/30/13
Outputs Target Audience: Cowpea producers and consumers. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? Graduate students were trained in the art and science of cowpea breeding. How have the results been disseminated to communities of interest? On-site visits were conducted with several cowpea producers. What do you plan to do during the next reporting period to accomplish the goals? Continue the program as outlined.
Impacts What was accomplished under these goals?
Two promising selections were identified and seed increased.
Publications
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Progress 01/01/12 to 12/31/12
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate disease, insect, and drought resistance found in IITA germplasm was initiated with the cooperation of Dr. BB Singh, retired IITA breeder. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull and Texas blackeye germplasm with several promising selections which should have enhanced utility in the freezing and fresh market industries. Several selections from these crosses were evaluated in commercial trials in California and Texas in 2012. If acceptable to the industry, it is anticipated that Texas Blackeye 2010 will be released in the near future as well as two green cotyledon types. PARTICIPANTS: Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Senior Research Associate. Cooperators: Tom Isakeit, Texas A&M AgriLife Extension, College Station, TX. B.B Singh, Visiting Professor, Texas A&M AgriLife Research, College Station, also, Frank Cates, Charleston, SC. Chad Nickles, Muleshoe, TX. and Dave Kirsten, Lodi, CA. TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), seed producers, truck farmers, and home gardeners. PROJECT MODIFICATIONS: Project emphasis is on promotion and release of program varieties.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with about 40,000 lbs of seed sold in 2012. Demand for Golden Eye Cream continues.
Publications
- No publications reported this period
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Progress 01/01/11 to 12/31/11
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate disease, insect, and drought resistance found in IITA germplasm was initiated with the cooperation of Dr. BB Singh, recently retired IITA breeder. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with three entries in the replicated trial and three entries in the observation trial in 2011. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull and Texas blackeye germplasm with several promising selections which should have enhanced utility in the freezing and fresh market industries. Several selections from these crosses were evaluated in commercial trials in California, Tennessee, and Texas in 2011. it is anticipated that Texas Blackeye 2010 will be released in the near future as well as two green cotyledon types. PARTICIPANTS: J. Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Research Associate. Cooperators: Tom Isakeit, Texas AgriLIFE Extension, College Station, TX. B.B Singh, Visiting Professor, Texas AgriLIFE Research, College Station, Richard Loeppert, Texas AgriLIFE Research, College Station, TX. Lynn Brandenberger, Oklahoma State University, Stillwater, OK. Blair Buckley, Louisiana State University, Bossier City, LA. Richard Fery, USDA-ARS, Charleston, SC, Stacy Gunter, University of Arkansas, Hope, AR. Dennis Motes, University of Arkansas, Alma, AR. Judy Thies, USDA-ARS, Charleston, SC. Also, Frank Cates, Charleston, SC. Brad Smith, Muleshoe, TX. and Dave Kirsten, Lodi, CA. TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), seed producers, truck farmers, and home gardeners. PROJECT MODIFICATIONS: Project emphasis is on promotion and release of program varieties.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 40,000 lbs of seed sold in 2011. Demand for Golden Eye Cream continues.
Publications
- Alexander, T., J. Rothe, B.B. Singh, S. Mahamane, D. Hays, R.H. Loeppert, and J.C. Miller, Jr. 2011. Screening Cowpea Varieties for Efficient Acquisition and Use of Phosphorous from Low-P Soils and Rock Phosphate. 2011 Texas Plant Protection Association 23rd Annual Conference. Brazos Center, Bryan, Texas, December 5-6, 2011. Abstracts, p29. (Abstr).
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Progress 01/01/10 to 12/31/10
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate disease, insect, and drought resistance found in IITA germplasm was initiated with the cooperation of Dr. BB Singh, recently retired IITA breeder. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with three entries in the replicated trial and three entries in the observation trial in 2010. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull and Texas blackeye germplasm with several promising selections which should have enhanced utility in the freezing and fresh market industries. Several selections from these crosses were evaluated in commercial trials in California, Tennessee, and Texas in 2010. it is anticipated that Texas Blackeye 2010 will be released in the near future. PARTICIPANTS: J. Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Research Associate. Cooperators: Tom Isakeit, Texas AgriLife Extension, College Station, TX. B.B Singh, Visiting Professor, Texas AgriLife Research, College Station, Richard Loeppert, Texas AgriLife Research, College Station, TX. Lynn Brandenberger, Oklahoma State University, Stillwater,OK. Blair Buckley, Lousiana State Univesity, Bossier City, LA. Richard Fery, USDA-ARS, Chraleston, SC, Stacy Gunter, University of Arkansas, Hope, AR. Dennis Motes, University of Arkansas, Alma, AR. Judy Thies, USDA-ARS, Charleston, SC. Also, Frank Cates, Charleston, SC. Brad Smith, Muleshoe, TX. and Dave Kirsten, Lodi, CA. TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), seed producers, and home gardeners. PROJECT MODIFICATIONS: Project emphasis is on promotion and release of program varieties.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 40,000 lbs of seed sold in 2010. Demand for Golden Eye Cream continues.
Publications
- No publications reported this period
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Progress 01/01/09 to 12/31/09
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate disease, insect(aphid), and drought resistance found in IITA germplasm was initiated with the cooperation of Dr. BB Singh, recently retired IITA breeder. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with four entries in the replicated trial and four entries in the observation trial in 2009. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the freezing and fresh market industries. PARTICIPANTS: J. Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Research Associate. Cooperators: Tom Isakeit, Texas AgriLife Extension, College Station, TX. B.B Singh, Visiting Professor, Texas AgriLife Research, College Station, Bill Payne, Texas AgriLife Research, College Station, TX. Richard Loeppert, Texas AgriLife Research, College Station, TX. Lynn Brandenberger, Oklahoma State University, Stillwater,OK. Blair Buckley, Lousiana State Univesity, Bossier City, LA. Richard Fery, USDA-ARS, Chraleston, SC, Stacy Gunter, University of Arkansas, Hope, AR. Dennis Motes, University of Arkansas, Alma, AR. Judy Thies, USDA-ARS, Charleston, SC. TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), seed producers, and home gardeners. PROJECT MODIFICATIONS: None
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 40,000 lbs of seed sold in 2009.
Publications
- de Bona, C.M., J.H. Gould, J.C. Miller Jr., D. Stelly, and E.S. Louzada. 2009. Citrus asymmetric somatic hybrids produced via fusion of gamma-irradiated and iodoacetamide-treated protoplasts. Pesq. Agropec. Bras., Brasilia, 44: 454-462.
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Progress 01/01/08 to 12/31/08
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate disease, insect and drought resistance found in IITA germplasm was initiated with the cooperation of Dr. BB Singh, recently retired IITA breeder. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with six entries in the replicated trial and eight entries in the observation trial in 2008. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the freezing and fresh market industries. PVP was granted for Golden Eye Cream (TX56061BRE). PARTICIPANTS: Project Participants: J. Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Research Associate. Cooperators: Tom Isakeit, Texas AgriLife Extension, College Station, TX. Bill Payne, Texas AgriLife Research, Amarillo, TX. Richard Loeppert, Texas AgriLife Research, College Station, TX. Lynn Brandenberger, Oklahoma State University, Stillwater,OK. Blair Buckley, Lousiana State Univesity, Bossier City, LA. Richard Fery, USDA-ARS, Chraleston, SC, Stacy Gunter, University of Arkansas, Hope, AR. Teddy Morelock, University of Arkansas, Fayettville, AR. Dennis Motes, University of Arkansas, Alma, AR. Judy Thies, USDA-ARS, Charleston, SC. TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), and seed producers. PROJECT MODIFICATIONS: Major emphasis has been to combine superior characteristics of Texas germplasm with that of the IITA germplasm. Dr. BB Singh, former cowpea breeder at IITA, is a visiting at Texas A&M University.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 60,000 lbs of seed sold in 2008.
Publications
- Bona, C.M., J.H. Gould, J.C. Miller Jr., G.R. Mceachern, M. Setamou, and E.S. Louzada. 2008. In vitro micropropagation of nine grape cultivars. Subtropical Plant Science. 59:56-63.
- Bona, C.M., J.H. Gould, J.C. Miller Jr., D.M. Stelly, and E.S. Louzada. 2008. Asymmetric hybridization: a tool to be used in Citrus radiation map creation. HortScience. (Abstr.). 43:1288.
- Bona, C.M., J.H. Gould, J.C. Miller Jr., D.M. Stelly, and E.S. Louzada. 2008. In vitro regeneration of somatic symmetric and asymmetric hybrid citrus plantlets produced via protoplast fusion. HortScience. (Abstr.). 43:1206.
- Bona, C.M., J.H. Gould, J.C. Miller Jr., D.M. Stelly, and E.S. Louzada. 2008. Symmetric and asymmetric somatic hybridization in Citrus spp. for scion genetic diversity generation. HortScience. (Abstr.). 43:1206.
- Mahamane, S., W.A. Payne, R.H. Loeppert, J.C. Miller, Jr, and D.W. Reed. 2008. Evaluation of cowpea genotypes for adaptation to low soil P conditions and rock phosphate application. HortScience. (Abstr.). 43:618-619.
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Progress 01/01/07 to 12/31/07
Outputs OUTPUTS: The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm continues with evaluation of F8 lines. Research involving the screeing of the U.S. cowpea core collection for phosphorus use efficiency was completed. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with 3 entries in the replicated trial and 4 entry in the observation trial in 2007. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility
in the freezing and fresh market industries. PVP is pending for Golden Eye Cream (TX56061BRE), which was released in 2006.
PARTICIPANTS: Project Participants: J. Creighton Miller, Jr. Professor and Project Leader, Douglas C. Scheuring, Senior Research Associate, Jeffery W. Koym, Research Associate. Cooperators: Tom Isakeit, Texas AgriLife Extension, College Station, TX. Bill Payne, Texas AgriLife Research, Amarillo, TX. Richard Loeppert, Texas AgriLife Research, College Station, TX. Lynn Brandenberger, Oklahoma State University, Stillwater,OK. Blair Buckley, Lousiana State Univesity, Bossier City, LA. Richard Fery, USDA-ARS, Chraleston, SC, Stacy Gunter, University of Arkansas, Hope, AR. Teddy Morelock, University of Arkansas, Fayettville, AR. Dennis Motes, University of Arkansas, Alma, AR. Judy Thies, USDA-ARS, Charleston, SC.
TARGET AUDIENCES: Cowpea (Southernpea) commercial producers, processors (canning and freezing), and seed producers.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 60,000 lbs of seed sold in 2007.
Publications
- No publications reported this period
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Progress 01/01/06 to 12/31/06
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm continues with evaluation of F7 lines. Research involving the screeing of the U.S. cowpea core collection for phosphorus use efficiency was continued. Efforts now focus on fine screeing of selected accessions. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. Several promising lines were evaluated and increased in Lubbock. We continued our participation in the Southernpea Cooperative Trials with 3 entries in the replicated trial and 4 entry in the observation trial in 2006. We have incorporated the green seed coat and green cotyledon traits into Texas Pinkeye Purple Hull, with
several promising selections which should have enhanced utility in the freezing and fresh market industries. Golden Eye Cream (TX56061BRE), with large cream seed, was released in 2006.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 60,000 lbs of seed sold in 2006.
Publications
- Miller, J.C., Jr. and D.C. Scheuring. 2006. Golden Eye Cream, a Large Seeded, High Yielding, Early Maturing, Southernpea for the Fresh Market and Home Garden. HortScience 41:1709-1710.
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Progress 01/01/05 to 12/31/05
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm continues with evaluation of F6 lines. Research into antioxidants in cowpeas was completed. The inheritance of antioxidant activity and its relationship to seed coat color was investigated. Factors governing high antioxidant activity appeared to be the same as those responsible for seed coat color, with apparent pleiotropic effects. Therefore, breeding for high antioxidant activity in cowpea is possible using highly pigmented parental lines. The U.S. cowpea core collection was screened for phosphorus use efficiency. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. We
continued our participation in the Southernpea Cooperative Trials with 3 entries in the replicated trial and 1 entry in the observation trial in 2005. We have incorporated the green seed coat and green cotyledon trait into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the freezing and fresh market industry. TX56061BRE, with large cream seed, will be released in 2006.
Impacts Although cowpea seed sales were down this year, Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continued to maintain its market share with over 60,000 lbs of seed sold in 2005.
Publications
- Nzaramba, N.M., Scheuring, D.C. and Miller,J.C. Jr. 2005. Variability for antioxidant activity in the US cowpea (Vigna unguiculata (L.) Walp.) core collection. HortScience 40:881. (Abstr.).
- Nzaramba, M.N., Hale,A.L.,Scheuring,D.C. and Miller,J.C. Jr. 2005. Inheritance of antioxidant activity and its association with seed coat color in cowpea (Vigna unguiculata (L.) Walp.). J Amer.Soc. Hort. Sci. 130:386-391.
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Progress 01/01/04 to 12/31/04
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, disease, and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm continues. Research into antioxidants in cowpeas has been expanded. The inheritance of antioxidant activity and its relationship to seed coat color was investigated. The U.S. cowpea core collection was screened for antioxidant activity. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. We continued our participation in the Southernpea Cooperative Trials with 3 entries in the replicated trial in 2004. We have incorporated the green seed coat and green cotyledon trait into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the
freezing and fresh market industry. TX123BE and TX158BE gc/gt continue to show promise. TX56061BRE, with large cream seed, will be released in 2005.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share with over 160,000 lbs of seed sold in 2004.
Publications
- Nzaramba, M.N., A.L. Hale, D.C. Scheuring, J.C.Miller, Jr. 2004. Inheritance of antioxidant activity and its association with seed coat color in cowpea (Vigna unguiculata (L.) Walp.). J Amer.Soc. Hort. Sci. 129:(In press).
- Nzaramba, Magnifique Ndambe. 2004. Inheritance of antioxidant activity and its association with seed coat color in cowpea (Vigna unguiculata (L.) Walp.). (Thesis)
- Nzaramba, N.M., D.C. Scheuring, A.L. Hale, and J.C. Miller, Jr. 2004. Genetic investigations of antioxidant activity in cowpea (Vigna unguiculata (L.) Walp.). HortScience 39:646. (Abstr.).
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Progress 01/01/03 to 12/31/03
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm continues. Our research into antioxidants in cowpeas has been expanded. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. We continued our participation in the Southernpea Cooperative Trials with 3 entries in the replicated trial and 3 entries in the observation trial in 2003. We have incorporated the green seed coat and green cotyledon trait into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the freezing and fresh market industry. TX128BE and TX148PE continue to show promise.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share.
Publications
- N.M. Nzaramba, Scheuring, D.C., Hale, A.L., and Miller, Jr., J.C., 2003. Antioxidant activity in cowpea determined on a single-seed basis. HortScience 38:1298. (Abstr.).
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Progress 01/01/02 to 12/31/02
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. An effort to incorporate the yield and drought resistance genes found in the California Blackeye varieties into Texas germplasm was initiated. Our research into antioxidants in cowpeas has been expanded. The statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. We continued our participation in the Southernpea Cooperative Trials with 6 entries in the replicated trial and 3 entries in the observation trial in 2002. We have incorporated the green seed coat and green cotyledon trait into Texas Pinkeye Purple Hull, with several promising selections which should have enhanced utility in the freezing and fresh market industry. Three promising selections include TX139CRM (cream), TX 58049-20PE (pinkeye) and TX
56061BRE (brown eye) will be named and released in 2003. TX128BE and TX148PE continue to show promise. We concluded our screening investigations for chlorosis in cowpea grown on high pH soils. The U.S. Cowpea Core Collection, 113 other cultivars/selections, and 1000 additional accessions were evaluated for chlorosis and the results reported for entry into the GRIN system.
Impacts Texas Pinkeye Purple Hull, with resistance to root-knot nematode and blackeye cowpea mosaic virus, continues to maintain its market share.
Publications
- Warrington, R.T., A.L. Hale, D.C. Scheuring, D.W. Whitaker, T. Blessington, and J.C. Miller, Jr. 2002. Variability for antioxidant activity in cowpea (Vigna unguiculata L. Walp) as influenced by genotype and postharvest re-hydtration. HortScience 37:738. (Abstr.).
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Progress 01/01/00 to 12/31/00
Outputs The overall objective of the cowpea improvement program continues to be the development of pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing and seed increase programs include sites at College Station, Weslaco, and Lubbock. We continued our participation in the Southernpea Cooperative Trials with six entries in 2000. 'Texas Pinkeye Purple Hull', with resistance to root-knot and blackeye cowpea mosaic virus, continues to maintain its market share. We have incorporated the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull', with several promising selections which will have enhanced utility in the freezing and fresh market industry. Several promising selections include TX 38003 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye) will be named and released in 2000. Our objective with mungbean remains to develop improved varieties with
synchronous flowering and improved yield and sprouting characteristics. Our mungbean release, 'TexSprout', is grown nationally and internationally. We are intensifying our investigations on the evaluation and genetics of chlorosis in cowpea grown on high pH soils. The U.S. Cowpea Core Collection, as well as a number of other cultivars and accessions, were evaluated for this trait in 2000.
Impacts It has been reported that 200,000 pounds of seed of 'Texas Pinkeye Purple Hull', a variety developed by this program, was sold in 2000, indicating that about 10,000 acres of this variety were grown.
Publications
- Hale, A.L., D.C. Scheuring, T.J. Gerik, J.D. Hart, and J.C. Miller, Jr. 2000. Further investigations on the genetics of resistance to iron deficiency in cowpea. HortScience 35:560. (Abstr).
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Progress 01/01/99 to 12/31/99
Outputs The overall objective of the cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco, and Lubbock. We continued our participation in the Southernpea Cooperative Trials with four entries in 1999. 'Texas Pinkeye Purple Hull', with resistance to root-knot and blackeye cowpea mosaic virus, continues to gain accaptance. We have incorporated the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull' with several promising selections which will have enhanced utility in the freezing industry. Several promising selections include TX 38003 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye) will be named and released in 2000. Our objective with mungbean remains to develop improved varieties with synchronous flowering and improved yield and
sprouting characteristics. Our mungbean release, 'TexSprout', has gained national prominence. We participated in the International Mungbean Nursery Trials again in 1999. Our emphasis with beans is on pintos. We are intensifying our investigations on the genetics of chlorosis resistance and susceptibility in cowpea.
Impacts Some 300,000 pounds of seed of Texas Pinkeye Purple Hull, a variety recently developed by this program, was sold in 1999. This indicates that about 15,000 acres of this variety were grown in 1999.
Publications
- No publications reported this period
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Progress 01/01/98 to 12/31/98
Outputs The overall objective of the cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco, and Lubbock. We contined our participation in the Southernpea Cooperative Trials with six entries in 1998. 'Texas Pinkeye Purple Hull', with resistance to root-knot and blackeye cowpea mosaic virus, continues to gain acceptance. We have incorporated the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull' with several promising selections which will have enhanced utility in the freezing industry. We have several promising selections including TX 38033 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye). Our objective with mungbean remains to develop improved varieties with synchronous flowering and improved yield and sprouting characteristics.
Our mungbean release, 'TexSprout', has gained national prominence. We participated in the International Mungbean Nursery Trials again in 1997. Our emphasis with beans is on pintos. We are continuing our investigations on the genetics of chlorosis resistance and susceptibility in cowpea.
Impacts (N/A)
Publications
- Mes, P.J., Cobb, B.G., Scheuring, D.C. and Miller, J.C., Jr. 1998. Seed coat discoloration in cowpea (Vigna unguiculta L. Walp.) CV Mississippi Silver. HortScience 33:590 (Abstr.)
- Cushman, L.C., Pemberton, H.B., Miller, J.C., Jr., and Kelly, J.W. 1998. Interactions of flower stage, cultivar, and shipping temperature and duration interactions affect pot rose performance. HortScience 33: 736-740
- Miller, J.C., Jr., and Miller, J.P. 1998. Advances in Cowpea Research, ed. by B.B. Singh, D.R. Mohan Raj, K.E. Dashiell and L.E.N. Jackai (invited review). HortScience 33(3): 771.
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Progress 01/01/97 to 12/31/97
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), and Lubbock. We continued our participation in the Southernpea Cooperative Trials with three entries in 1997. Our release, 'Texas Pinkeye Purple Hull,' continues to gain market share with resistance to root-knot and blackeye cowpea mosaic virus. We are incorporating the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull' which will enhance its utility for the freezing industry. We have a number of promsing new selections including TX 58048-2000 (pinkeye) and TX 56061 (brown eye). Our objective remains to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. Our
mungbean release, 'TexSprout,' has gained national prominence. We participated in the International Mungbean Nursery Trials and the National Dry Bean Nursery Trials again in 1997. Our emphasis with beans is on pintos. We have identified RAPD markers for iron chlorosis resistance and susceptibility in dry bean. We found chlorosis in cowpea to be controlled by a single dominant gene, while resistance to chlorosis in bean was controlled by two complimentary dominant genes.
Impacts (N/A)
Publications
- Cortinas-Escobar, H.M, Giovannoni, J.J. and Miller, J.C., Jr. 1997. Identification of RAPD markers in a population of common bean (Phaseolus vulgaris, L.) segregating for iron chlorosis resistance. Subtrop. Plant Sci. J. 48:33-37.
- Cushman, L.C., Pemberton, H.B. and Miller, J.C., Jr. 1997. Pot rose flower longevity and leaf abscission responses to shipping temperature and duration. HortScience 32: (In press).
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Progress 01/01/96 to 12/30/96
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), and Lubbock. We continued our participation in the Southernpea Cooperative Trials with five entries in 1996. Our release, 'Texas Pinkeye Purple Hull', continues to show promise and is resistant to root-knot and blackeye cowpea mosaic virus. We are continuing to incorporate the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull' which will enhance its utility for the freezing industry. We have several promising selections including TX 38033 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye). Our objective remains to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting
characteristics. Our mungbean release, 'TexSprout', has gained national prominence. We participated in the International Mungbean Nursery Trials again in 1996. Our emphasis with beans is on pintos. We have identified RAPD markers for iron chlorosis resistance and susceptibility in both cowpea and common bean. We found chlorosis in cowpea to be controlled by a single dominant gene, while resistance to chlorosis in bean was controlled by two complimentary dominant genes.
Impacts (N/A)
Publications
- CORTINAS-ESCOBAR, H.M. 1996. Iron chlorosis resistance in dry bean (Phaseolus vulgaris L.) and cowpea (Vigna unguiculata (L.) Walp.): Inheritance and marker-assisted selection. (Dissertation).
- GILLASPIE, A.G., CHAMBLISS, O.L., FERY, R.L., HALL, A.E., MILLER, J.C., JR. AND MORELOCK, T.E. 1996. A core subset established for the USDA cowpea (Vigna unguiculata (L.) Walp.) germplasm collection. HortScience 31:762.
- KARIM, A.L., JUO, S.R., MILLER, J.C. JR., COTHREN, J.T. AND HUSSEY, M.A. 1996. An agronomic evaluation of serradella, cowpea, and mat bean on two soil types ineast central Texas. Agron. Abstr. 1996 Annual Meetings, p. 119. (Abstr.).
- CORTINAS-ESCOBAR, H.M., MILLER, J.C., JR. AND GIOVANNONI, J.J. 1997. Segregationand linkage analysis of RAPD markers in cowpea [Vigna unguiculata (L.) Walp.] F2population segregating for iron chlorosis. J. Amer. Soc. Hort. Sci. 121:Submit.
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Progress 01/01/95 to 12/30/95
Outputs #01/95 - 12/95 The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), Lubbock, and Temple. We continued our participation in the Southernpea Cooperative Trials with five entries in 1995. Our recent release, 'Texas Pinkeye Purple Hull', continues to show promise with resistance to root-knot and blackeye cowpea mosaic virus. We are incorporating the green seed coat and green cotyledon trait into 'Texas Pinkeye Purple Hull' which will enhance its utility for the freezing industry. We have several promising new selections including TX 38033 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye). Our objective remains to develop improved mungbean varieties with synchronous flowering and improved yield
and sprouting characteristics. Our mungbean release, "TexSprout', has gained national prominence. We participated in the International Mungbean Nursery Trials again in 1995. Our emphasis with beans is on pintos. We are attempting to identify RAPD markers for iron chlorosis resistance and susceptibility in dry bean. We found chlorosis in cowpea to be controlled by a single dominant gene, while resistance to chlorosis in bean was controlled by two complimentary dominant genes.
Impacts (N/A)
Publications
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Progress 01/01/94 to 12/30/94
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), Lubbock, and Temple. We continued our participation in the Southernpea Cooperative Trials with seven entries in 1994. Our recent release, `Texas Pinkeye Purple Hull', continues to show promise with resistance to root-knot and blackeye cowpea mosaic virus. We are incorporating the green seed coat and green cotyledon trait into `Texas Pinkeye Purple Hull' which will enhance its utility for the freezing industry. We have several promising new selections including TX 38033 (cream), TX 58049-2000 (pinkeye) and TX 56061 (brown eye). Our objective remains to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting
characteristics. Our mungbean release, `TexSprout', continues to gain national prominence. We participated in the International Mungbean Nursery Trials and in the Cooperative Dry Bean Nursery again in 1994. Our emphasis with beans is on pintos. We have identified RAPD markers for iron chlorosis resistance and susceptibility in dry bean.
Impacts (N/A)
Publications
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Progress 01/01/93 to 12/30/93
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), Lubbock, Temple and Munday. We continued our participation in the Southernpea Cooperative Trials with eight entries in 1993. Our recent release, `Texas Pinkeye Purple Hull', continues to show promise with resistance to root-knot and blackeye cowpea mosaic virus. We have incorporated the green cotyledon trait into `Texas Pinkeye Purple Hull' which will enhance its utility for the freezing industry. We have several promising new selections including TX 38033 (cream) and TX 58049-2000 (pinkeye). We continue to work to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. Our mungbean release,
`TexSprout', continues to gain national prominence. We participated in the International Mungbean Nursery Trials and in the Cooperative Dry Bean Nursery again in 1993. Our emphasis with beans is on pintos. We have also initiated studies using RAPD technology to investigate the genetic basis for resistance to iron chlorosis in beans. We are also investigating the effect of biozyme on germination and emergence of beans under sub-optimal temperatures, pesticide overdoses and salinity stress.
Impacts (N/A)
Publications
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Progress 01/01/92 to 12/30/92
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield, and disease and drought resistance. Our statewide testing program includes sites at College Station, Weslaco (Spring and Fall), Lubbock, Overton, Temple and Munday. We continued our participation in the Southernpea Cooperative Trials with eight entries in 1992. Our recent release, `Texas Pinkeye', continues to show promise with resistance to root-knot and blackeye cowpea mosaic virus. We have several promising new selections including TX 29144 (blackeye), TX 38033 (cream), TX 58051-1000 (pinkeye) and TX 58048-2000 (pinkeye). We continue to work to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. Our recent mungbean release, "TexSprout', continues to gain national prominence. We participated in the Cooperative
Dry Bean Nursery again in 1992. We completed a report summarizing more than ten years of work evaluating the U.S. Cowpea Germplasm Collection for nitrogen fixation potential. We have also initiated a physiological genetic study related to chlorosis in both cowpea and Phaseolus.
Impacts (N/A)
Publications
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Progress 01/01/91 to 12/30/91
Outputs The overall objective of the Texas cowpea improvement program continues to be the development of improved pinkeye, blackeye, and cream varieties, possessing improved plant architecture, high yield and disease and drought resistance. Our statewide program includes sites at College Station, Weslaco (Spring and Fall), Lubbock, Overton, Temple and Munday. We continued our participation in the Southernpea Cooperative Trials with seven entries in 1991. Our recent release, `Texas Pinkeye' continues to show promise with resistance to root-knot and blackeye cowpea mosaic virus. We have several promising new selections including TX 29144(blackeye), TX 38033(cream), TX 57051-1000 (pinkeye) and TX57048-2000 (pinkeye). We continue to work develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. We again participate in the International Mungbean Nursery Trials of the Asian Vegetable Research and Development Center, Taiwan in
1991. Our recent mungbean release, `TexSprout', continues to gain national prominence. We participated in the Cooperative Dry Bean Nursery again in 1991. The Texas pinto bean industry grew from less than one thousand acres in 1980 to about twenty thousand acres in 1991.
Impacts (N/A)
Publications
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Progress 01/01/90 to 12/30/90
Outputs The overall objective of the Texas cowpea program continues to be the development of improved pinkeye and blackeye varieties, possessing superior plant characteristics and high yield, with emphasis on nitrogen fixation and drought resistance. We have extensive statewide trials at Weslaco, College Station, Lubbock, Munday, Temple and Overton. In addition, we continue to participate in the Southernpea Cooperative Trials with four entries in 1990. The Texas selection TX57.220-4 was released and named 'Texas Pinkeye' in 1990. The reception by the industry has been very positive because of its early maturity, high yield, suitability for narrow row planting and mechanical harvest, and superior processing characteristics. Studies on cowpea, ratooning are being concluded. We continue to work to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. We again participated in the International Mungbean Nursery Trials
of the Asian Vegetable Research and Development Center, Taiwan in 1990. Our recent mungbean release, 'TexSprout', continues to gain national prominence. Participation in ICRISAT's Estra Early Pigeonpea International Trial continued in 1990. Because of a dramatic increase in interest and acreage in pinto beans in Texas, we initiated participation in the National 1990 Cooperative Dry Bean Nursery.
Impacts (N/A)
Publications
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Progress 01/01/89 to 12/30/89
Outputs The overall objective of the Texas cowpea program continues to be the development of improved pinkeye and blackeye varieties, possessing superior plant characteristics and high yield, with emphasis on nitrogen fixation and drought resistance. We have extensive state-wide trials at Weslaco, College Station, Lubbock and Overton. In addition, we continue to participate in the Southernpea Cooperative Trials with nine entries in 1989. The most promising Texas selection at this time is TX57.220-4, a pinkeye with early maturity, high yield and superior processing characteristics. It is expected that this variety will be released in 1990. We are continuing our work to develop improved mungbean varieties with synchronous flowering and improved yield and sprouting characteristics. We participated again in the International Mungbean Nursery Trials of the Asian Vegetable Research and Development Center, Taiwan in 1989. 'TexSprout', the mungbean variety we released in 1988, has
gained national prominence. Studies on cowpea and mungbean as ratoon crops have been initiated. Participation in ICRISAT's Extra Early Pigeonpea International Trial continues in 1989.
Impacts (N/A)
Publications
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Progress 01/01/88 to 12/30/88
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant chracteristics and high yield, with major emphasis on nitrogen fixation and drought and disease resistance. In 1988, 158 F(2) selections, representing 191 families were made. Six advanced selections were entered in the Southernpea Cooperative Trials, and TX19016, TX19071 and TX57.220-4 show promise. We are continuing our work to develop improved mungbean varieties with synchronous flowering and and improved yield and sprouting characteristics. We participated in the International Mungbean Nursery Trials of the Asian Vegetable Research and Development Center, Taiwan, again the 'TexSprout' mungbean was released jointly with AVRDC in 1988. Studies on the effects of drought and heat stress on yield stability are continuing. Participation in ICRISAT's Extra Early Pigeonpea International Trial commenced in 1988.
Impacts (N/A)
Publications
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Progress 01/01/87 to 12/30/87
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant characteristics and high yield, with major emphasis on nitrogen fixation and drought and disease resistance. In 1987, 137 selections, representing 140 families were made. Five advanced selections were entered in the Southernpea Cooperative Trials, and TX19016 and TX19071 show promise. We participated in the International Mungbean Nursery Trials of the Asian Vegetable Research and Development Center, Taiwan, again in 1987. Several mungbean lines look extremely promising and a joint release with AVRDC is in progress. Studies on the effects of drought and heat stress on yield stability are continuing.
Impacts (N/A)
Publications
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Progress 01/01/86 to 12/30/86
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant characteristics and high yield, with major emphasis on nitrogen fixation, drought and disease resistance and mycorrhizal colonization. In 1986, 153 F(2) selections, representing 286 families, were made. Two advanced selections were entered in the Southernpea Cooperative Trials. We participated in the International Mungbean Trials of the Asian Vegetable Research and Development Center, Taiwan, again in 1986. Several mungbean lines have looked extremely promising for several seasons, and a joint release(s) with AVRDC is expected in the next few months. Studies on the influence of vesicular-arbuscular mycorrhizal fungi and N(2) fixation are continuing.
Impacts (N/A)
Publications
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Progress 01/01/85 to 12/30/85
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant characteristics and high yield, with major emphasis on nitrogen fixation, drought and disease resistance and mycorrhizal colonization. In 1985, 142 F(2) selections, representing 139 families, were made. Six advanced selections were entered in the Southern pea Cooperative Trials. We participated in the International Mungbean Trials of the Asian Vegetable Research and Development Center, Taiwan, again in 1985. Several mungbean lines have looked extremely promising for several seasons, and a joint release(s) with AVRDC is expected in the near future. Studies on the influence of vesiculararbuscular mycorrhizal fungi and N(2) fixation are continuing.
Impacts (N/A)
Publications
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Progress 01/01/84 to 12/30/84
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant characteristics and high yield, with major emphasis on nitrogen fixation, drought resistance and mycorrhizal colonization. TX 63-7 performed well in the Regional Southernpea Trials for the fourth consecutive ear, and there are also a number of promising advanced selections at F7 and beyond. At least two of these selections will be entered in the 1985 trials. The Southern Cooperative Snap Bean Trials and the International Mungbean Trials of the Asian Vegetable Research and Development Center, Taiwan, were conducted again in 1984. One mungbean line has looked extremely promising for several seasons, and negotiations have been initiated for a joint release with AVRDC. Studies on the influence of vesicular-arbuscular mycorrhizal fungi on N(2) fixation and phosphorus uptake in cowpea are continuing. A companion study on inter-relationships
among N(2) fixation and seed yield components in cowpea has been completed.
Impacts (N/A)
Publications
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Progress 01/01/83 to 12/30/83
Outputs The primary objective continues to be the development of improved blackeye and pinkeye cowpea varieties, possessing superior plant characteristics and high yield, with major emphasis on nitrogen fixation, drought resistance and mycorrhizal colonization. TX 63-7 performed well in the Regional Southernpea Trials for the third consecutive year, and there are also a number of promising advanced selections at F(5) and beyond. Some 292 F(2) selections, representing 261 families were made in 1983. The Southern Cooperative Snap Bean Trials and the International Mungbean Trials of the Asian Vegetable Research and Development Center, Taiwan, were conducted again in 1983. Studies on the influence of vesicular-arbuscular mycorrhizal fungi on N(2) fixation and phosphorus uptake in cowpea were undertaken. A companion study on inter-relationships among N(2) fixation and seed yield components in cowpea were also initiated.
Impacts (N/A)
Publications
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Progress 01/01/81 to 12/30/81
Outputs The primary objective remains the development of determinate, blackeye cowpea varieties possessing superior plant characteristics and high yield with major emphasis on nitrogen fixation and drought tolerance. A number of advanced selections show promise and TX 63-7 performed well again in the Regional Southernpea Trials in 1981. Both the Regional Southernpea Trials and the Southern Cooperative Snap Bean Trials were conducted again in Texas. In addition, Texas participated in the International Mungbean Trials of the Asian Vegetable Research and Development Center, Taiwan. Various investigations were conducted in support of the breeding program, including the genetics and heritability of nitrogen fixation in mungbean, screening and identification of drought tolerant cowpea genotypes, and intravarietal variability for nitrogen fixation in cowpea. We have found substantial variability for both nitrogen fixation potential and drought tolerance in cowpea.
Impacts (N/A)
Publications
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Progress 01/01/80 to 12/30/80
Outputs The primary objective remains the development of determinate, blackeye cowpea varieties possessing high levels of drought tolerance and nitrogen fixation potential. A number of advanced selections show promise ad TX 63-7 performed well in the Regional Southern Pea Trials in 1980. Both the Regional Sothern Pea Trials and the Southern Cooperative Snap Bean Trials were conducted this past year in Texas. Various investigations were conducted in support of the breeding program, including the genetics and heritability of nitrogen fixation in cowpea mungbean, screening and identification of drought tolerant genotypes, diurnal and seasonal patterns of plant-water status and intraspecific variability for nitrogen fixation in cowpea.
Impacts (N/A)
Publications
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Progress 01/01/79 to 12/30/79
Outputs Increasing yields of legumes and other proteinaceous crops is a world-wide concern. In our program, both traditional and non-traditional approaches are being taken to accomplish this task. Investigations on the role of nitrogen fixation as it relates to crop productivity are continuing. During the past year, a major effort was devoted to investigating the genetics of differential nitrogen fixation in cowpea. These results are presently being analyzed and interpreted. Using two high fixing and two low fixing cowpea genotypes, grafting studies were conducted to determine the effect of root stock and scion on differential nitrogen fixation potential. In the lines tested, rootstock was the most important factor. Studies concerning nitrogen fixation-drought tolerance were initiated, using a composite of the world cowpea collection obtained from IITA, Ibadan, Nigeria. Kjeldahl analysis of some 263 okra plant introductions and varieties revealed variability in protein
content, ranging from 18 to 36%. The Regional Southernpea Trials and the Southern Cooperative Snap Bean Trials were conducted this past year in Texas. A cowpea breeding program per se was initiated during the past year. Many crosses have been made and a number of promising lines were selected.
Impacts (N/A)
Publications
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