Progress 07/01/01 to 06/30/06
Outputs
Potato evaluation and improvement research was conducted over the period 2001-2006 in conjunction with the Tri-state (Idaho, Oregon, and Washington) potato variety development program. The project is ongoing, however, in 2005 it was ceded to Dr. Jeffrey Stark and the research is now being conducted under a new Hatch grant. The single major objective of this research was to release new potato varieties of value to the Pacific Northwest potato industry. During the past five years, six varieties have been released and documented, including Ivory Crisp, Summit Russet, Alturas, GemStar Russet, Defender, and Western Russet. All six varieties are being produces in the US and are economically important to the potato industry. Defender is the first processing variety to be released worldwide with high levels of resistance to both the foliar and tuber phases of late blight. Western Russet is being market by a grower cooperative known as Western Marketing and was produced on over
10,000 acres in 2006. Four additional varieties are currently in various stages of release, including Blazer Russet (A8893-1), Premier Russet (A93157-6LS), Highland Russet (A9045-7), and Yukon Gem (NDA5507-3Y). Blazer Russet is an early variety notable for its high yield of oblong-long, medium-russeted tubers and high culinary quality. Premier Russet is a dual-purpose russet selection, notable for its resistance to the accumulation of reducing sugars following long-term storage at 40-45 F. Its cold-sweetening resistance allows storage at colder temperatures thereby prolonging tuber dormancy and quality for processing or fresh pack use. This is the first russet variety released that expresses the cold-sweetening resistance trait. Highland Russet is lightly russeted variety notable for its high yields and its tuber uniformity in size and shape. Fry recovery from the field or storage is high. Yukon Gem is the first yellow-fleshed specialty variety to be released from the northwest
breeding program. Included as part of the variety development research were cooperative industry trials, seed grower increases, and studies to determine optimal management practices for all new varieties. Management factors studied included plant spacing, hilling and cultivating practices, planting depth, nitrogen fertilizer requirements, and irrigation practices. Additional research was conducted to aid germplasm improvement. Germplasm that combined resistance to corky ringspot with long tuber shape, russet skin, and processing quality was developed. As part of this work, the resistance genes were mapped and molecular markers identified. The mode of inheritance of tuber glycoalkaloid content was determined within the germplasm utilized in the breeding program. Finally, sources parental clones were identified for use in developing varieties high in vitamin C.
Impacts
Varieties recently released by the Tri-state program are now produced on over 110,000 acres with value to growers placed at approximately $150 million. Ranger Russet, released by the program in 1991, is the third most widely grown variety in the northwest. This impact is expected to increase. A 2002 economic analysis of the program revealed that every dollar invested in the program results in a $39 return. As improved varieties are adopted quality and production efficiency will improve, fertilizer and pesticide inputs will decrease, environmental impact will be lessened. The overall impact will be to maintain or improve the competitiveness of the Northwest potato industry, assist farmers to retain their way of life, and improve the safety and quality of the work environment for all involved in potato production.
Publications
- Rykbost, K.A., Voss, R., James, S.R., Mosley, A.R., Charlton, B.A., Hane, D.C., Johansen, R.H., Love, S.L. and Thornton, R.E. 2001. Mazama: an early maturing, bright red-skinned cultivar for fresh market. Amer. J. Potato Res. 78:383-387.
- Mosley, A.R., Rykbost, K.A., James, S.R., Hane, D.C., Shock, C.C., Charlton, B.A., Pavek, J.J., Love, S.L., Corsini, D.L. and Thornton, R.E. 2001. Klamath Russet: a full season, fresh market, long russet. Amer. J. Potato Res. 78:377-381.
- Coetzer, C., Corsini, D., Love, S., Pavek J. and Tumer, N. 2001. Control of enzymatic browning in potato Solanum tuberosum L. by sense and antisense RNA from tomato polyphenol oxidase. J. Agric. Food Chem. 49:652-657.
- Love, S.L., Novy, R.G., Whitworth, J., Corsini, D.L., Pavek, J.J., Mosley, A.R., Pavek, M.J., Knowles, N.R., Brown, C.R., James, S.R. and Hane, D.C. 2006. Western Russet: A new potato variety with excellent fresh market and frozen-fried processing quality and field resistance to common scab and PVY. Amer. J. Potato Res. 83:161-169.
- Love, S.L., Novy, R.G., Whitworth, J., Corsini, D.L., Pavek, J.J., Mosley, A.R., Pavek, M.J., Knowles, N.R., Brown, C.R., James, S.R., Hane, D.C., and Miller, J.C. 2006. GemStar Russet: a potato variety with high yield, good culinary quality, excellent fresh market appearance, and resistance to common scab. Amer. J. Potato Res. 83:171-180.
- Brown, C.R., Mojtahedi, H., James, S., Novy, R.G. and Love, S.L. 2006. Development and evaluation of potato breeding lines with introgressed resistance to Columbia root-knot nematode (Meloidogyne chitwoodi). Amer. J. Potato Res. 83:1-8.
- Novy, R.G., Love, S.L., Corsini, D.L., Pavek, J.J., Whitworth, J., Mosley, A.R., James, S.R., Hane, D.C., Shock, C.C., Rykbost, K.A., Brown, C.R., Thornton, R.E., Knowles, N.R., Pavek, M.J., Olsen, N. and Inglis, D.A. 2006. Defender: a high-yielding, processing potato cultivar with foliar and tuber resistance to late blight. Amer. J. Potato Res. 83:9-19.
- Love, S.L., Stark, J.C. and Salaiz, T. 2005. Response of four potato cultivars to rate and timing of nitrogen fertilizer. Amer. J. Potato Res. 82:21-30.
- Salaiz, T.A., Love, S.L., Patterson, P.E. and Guenthner, J.F. 2005. Economic performance of two new potato varieties using a fresh market consignment-packing model. Amer. J. Potato Res. 82:147-153.
- Love, S.L., Novy, R., Whitworth, J., Corsini, D.L., Pavek, J.J., Mosley, A.R., Thornton, R.E., Knowles, N.R., James, S.R. and Hane, D.C. 2005. Summit Russet: a new russet potato variety with good fresh market and frozen processing qualities. Amer. J. Potato Res. 82:425-432.
- Love, S.L., Salaiz, T., Shafii, B., Price, W.J., Mosley, A.R. and Thornton, R.E. 2004. Stability of expression and concentration of ascorbic acid in North American potato germplasm. HortScience 39:156-160.
- Novy, R.G., Corsini, D.L., Love, S.L., Pavek, J.J., Mosley, A.R., James, S.R., Hane, D.C., Shock, C.C., Rykbost, K.A., Brown, C.R. and Thornton, R.E. 2003. Alturas: A multi-purpose russet potato cultivar with high yield and tuber specific gravity. Amer. J. Potato Res. 80:295-301.
- Love, S.L., Mosley, A.R., Novy, R., Corsini, D.L., Thornton, R.E., James, S.R., and Hane, D.C. 2003. Ivory Crisp: A potato variety with high tuber solids and cold chipping ability. Amer. J. Potato Res. 80:207-213.
- Hane, D.C., Mosley, A.R., James, S.R., Rykbost, K.A., Shock, C.C., Love, S.L., Corsini, D.L., Pavek, J.J., Thornton, R.E., Charlton, B.A., Eldredge, E.P. and Yilma, S. 2003. Wallowa Russet: A full season long russet for processing and fresh market. Amer. J. Potato Res. 80:289-294.
- Rykbost, K.A., James, S.R., Mosley, A.R., Charlton, B.A., Hane, D.C., Eldredge, E., Voss, R., Johansen, R.H., Love, S.L. and Thornton, R.E. 2001. Modoc: A potato variety with bright red skin and early maturity for fresh market. Amer. J. Potato Res. 80:235-240.
- Higley, J.S., Love, S.L., Price, W.J., Nelson, J.E. and Huber, K.C. 2003. The rapid visco analyzer (RVA) as a tool for differentiating potato cultivars on the basis of flour pasting properties. Amer. J. Potato Res. 80:195-206.
- Araji, A.A. and Love, S. 2002. The economic impact of investment in the Pacific Northwest potato variety development program. Amer. J. Potato Res. 79:411-420.
- Love, S.L., Novy, R., Corsini, D.L., Pavek, J.J., Mosley, A.R., Thornton, R.E., James, S.R. and Hane, D.C. 2002. Gem Russet: a long russet potato variety with excellent fresh market and french fry processing quality. Amer. J. Potato Res. 79:25-32.
- Love, S.L., Corsini, D.L., Novy, R., Pavek, J.J., Mosley, A.R., Thornton, R.E., James, S.R., Hane, D.C. and Rykbost, K.A. 2002. IdaRose: a potato variety with bright red skin, excellent culinary quality, and long tuber dormancy. Amer. J. Potato Res. 79:79-84.
- Rykbost, K.A., Voss, R., James, S.R., Mosley, A.R., Charlton, B.A., Hane, D.C., Johansen, R.H., Love, S.L. and Thornton, R.E. 2001. Winema: an early maturing, red-skinned cultivar for fresh market. Amer. J. Potato Res. 78:371-375.
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Progress 01/01/05 to 12/31/05
Outputs
`Blazer Russet' was released from the Aberdeen program in 2005 in collaboration with researchers in OR and WA. `Blazer Russet' is an early to mid-season variety notable for its high yield of oblong-long, medium-russeted tubers. This variety has moderate specific gravity and resistances to sugar ends, tuber malformations and most internal and external defects. It shows good potential for both processing and fresh markets. A93157-6LS is a dual-purpose russet selection, notable for its resistance to the accumulation of reducing sugars following long-term storage at 40-45 F. Its cold-sweetening resistance allows storage at colder temperatures thereby prolonging tuber dormancy and quality for processing or fresh pack use. It has received the highest ratings for processing merit among 20 entries over the past 3 years and was rated #2 for fresh pack merit. A9045-7 is lightly russeted selection notable for its high yields and its tuber uniformity in size and shape. Fry
recovery from the field or storage is high. A decision to release the two latter clones will be made in 2006. Studies were conducted in southern Idaho in 2005 to determine responses of some of the newer potato varieties to key cultural variables such as irrigation, nitrogen and phosphorus application rates, and plant spacing. Russet Burbank, Ranger Russet, Alturas, and A93157-6LS were planted at an in-row spacing of either 20, 30 or 40 cm and were irrigated at rates approximately equal to either 40, 60, 80 or 100% ET. A93157-6LS produced the highest U.S. No. 1 yields at all irrigation levels, followed by Ranger Russet, Alturas and Russet Burbank. A93157-6LS also produced the highest yields of tubers greater than 10 oz at all irrigation levels. Widening plant spacing had a mixed effect on U.S. No. 1 yields, decreasing yields for all varieties at the 100% ET irrigation level but increasing yields for Alturas, A93157-6LS and Ranger Russet at the 40% ET level, and for Alturas and
A93157-6LS at the 60% ET level. Phosphorus response studies were conducted in southwest Idaho for A93157-6LS, Ranger Russet, Shepody, and Russet Burbank. All varieties but Russet Burbank responded significantly to P fertilization, although only A93157-6LS and Ranger Russet were significant for total yield and A93157 and Shepody for US No. 1 yield. A93157-6LS had the largest response to fertilizer P with increases in total, US No.1, and 6-12 and >12 oz size categories. The significant increase in US No. 1 yield for Shepody was largely due to a significant increase in the 6-12 oz tubers, while the increase in total yield for Ranger was due to increases in smaller tubers (4-6 and < 4 oz) and in US No. 2 and malformed tubers. Nitrogen response studies were conducted at Aberdeen. Blazer Russet, A93157-6LS and Western Russet produced maximum total and U.S. No. 1 yields at N rates approximately equal to those required for Russet Burbank. By comparison, Alturas required about 100 kg N/ha less
than Russet Burbank, while A9045-7 required about 30-40 kg N/ more for maximum yield. In addition, Alturas, A9045-7 and A93157-6LS produced the highest yields per unit of N applied.
Impacts
Varieties recently released by the Tri-state program are now produced on over 110,000 acres with value to growers placed at approximately $150 million. Ranger Russet, released by the program in 1991, is the third most widely grown variety in the US. This impact is expected to increase. A recent economic analysis of the program revealed that every dollar invested in the program results in a $39 return. As improved varieties are adopted quality and production efficiency will improve, fertilizer and pesticide inputs will decrease, environmental impact will be lessened. Economic impact will be to maintain or improve the competitiveness of the Northwest potato industry, assist farmers to retain their way of life, and improve the safety and quality of the work environment for all involved in potato production.
Publications
- Love, S.L., Stark, J.C. and Salaiz, T. 2005. Response of four potato cultivars to rate and timing of nitrogen fertilizer. Amer. J. Potato Res. 82:21-30.
- Salaiz, T.A., Love, S.L., Patterson, P.E. and Guenthner, J.F. 2005. Economic performance of two new potato varieties using a fresh market consignment-packing model. Amer. J. Potato Res. 82:147-153.
- Love, S.L., Novy, R., Whitworth, J., Corsini, D.L., Pavek, J.J., Mosley, A.R., Thornton, R.E., Knowles, N.R., James, S.R. and Hane, D.C. 2005. Summit Russet: a new russet potato variety with good fresh market and frozen processing qualities. Amer. J. Potato Res. 82:225-231.
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Progress 01/01/04 to 12/31/04
Outputs
Three Tri-state potato selections are being released during 2004. These include A9014-2 (GemStar Russet), a drought and stress tolerant clone with good fresh market appearance and processing quality; A90586-11 (Defender), a late blight resistant long white; and A7961-1 (Western Russet), a medium maturing variety with good early harvest yield and processing quality. Two advanced selections are generating interest in the potato industry. These include A95109-1, and early maturing russet with good appearance and culinary quality, and A93157-6LS, a cold-frying russet that is resistant to stress and defects. Emphasis for variety development within the Idaho program continues to be aimed at traditional varieties. These include fresh market and processing russets (75% commitment), round-white chippers (20% commitment), and fresh market reds (5% commitment). Specific breeding objectives within these market classes include production efficiency, end-product quality,
storability, resistance to pests (late blight, early blight, verticillium wilt, PVY, PVX, PLRV, corky ringspot, root-knot nematodes, soft rot, pink rot, and powdery scab), resistance to environmental stresses, and nutritional value. This mode of operation may or may not change depending on industry interest and direction. Success of the Tri-state program is visible through the acceptance of two relatively new releases. Ranger Russet is now 2nd ranked in the Northwest and 3rd ranked nationally in acreage produced. Alturas, a new release, is ranked 5th in the Northwest and 7th nationally. In 2004, twenty-eight trials were conducted at seven locations across southern Idaho. These consisted of advanced and cooperative variety trials, grower variety trials, genetic studies, and management studies. Management studies included an experiment to generate a prediction model for plant spacing based on tuber setting properties of varieties. Additional efforts went into producing high-quality,
limited-generation seed for commercial evaluation and production. Work is being done to generate management recommendations under conditions of limited water supply that incorporate variety choice as a key element. Genetic studies included determination of vitamin C inheritance and development of corky ringspot molecular markers. In cooperation with Dr. Chuck Brown (ARS, Prosser, WA), extensive screening continues in an attempt to develop a russet with good yield, quality, and resistance to corky ringspot. The population tested in 2004 consisted largely of nice looking russets with good resistance. Probability of success with this project appears now to be very high.
Impacts
This research is the Idaho component of the Northwest Potato Variety Development Program (Tri-State). This project has had a positive influence on the Northwest potato industry through the release of new varieties that provide advantages of disease resistance, productivity, production efficiency, and tuber quality. Added value of variety releases is now estimated at approximately $135 million. Adoption of new varieties with resistance to many diseases and physiological problems is expected to provide positive environmental impacts through the reduction of pesticide usage and nitrate leaching. Increasingly rapid adoption of the varieties being released will increase the impact over the life of the project. The ultimate impact of the project will be to maintain the competitiveness of the Northwest industry in an increasingly competitive global market.
Publications
- Brandt, T.L., Kleinkopf, G., Olson, N. and Love, S. 2004. Storage management for Gem Russet potatoes. University of Idaho Current Information Series No. 1118.
- Brandt, T.L., Kleinkopf, G., Olsen, N. and Love, S.L. 2004. Managing Summit Russet in storage. Univ. of Idaho Curr. Info. Series No. 1123.
- Love, S.L., Salaiz, T., Shafii, B., Price, W.J., Mosley, A.R. and Thornton, R.E. 2004. Stability of expression and concentration of ascorbic acid in North American potato germplasm. HortScience 39:156-160.
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Progress 01/01/03 to 12/31/03
Outputs
Three new potato varieties are being prepared for release in 2004, including A7961-1 (Western Russet), A9014-2, and A90586-11. Western Russet is a long, russet type with excellent fresh market and processing quality. It produces high yield, good tuber size, and excellent processing quality under early harvest conditions. A9014-2 is an early to medium maturing variety with outstanding yield potential and tuber appearance. Initially, it is likely to be adopted for fresh market use, but A9014-2 also has good processing quality and is resistant to cold-temperature sweetening. A90586-11 is the first long white potato released in the US that combines French fry processing quality with a high level of resistance to all strains of late blight endemic to Toluca, Mexico. It is being tested in areas where late blight is a consistent concern and under disease pressure should provide a four to five-fold reduction in fungicide applications. Seed of all three varieties, in the form
of pre-Nuclear mini-tubers, is currently being produced for distribution to seed growers in the spring of 2004. In 2003, 34 trials were grown at seven locations throughout southern Idaho. Included were variety trials, management studies, germplasm enhancement studies, and seed increases. A paper was prepared for publication that demonstrates the need for variety specific nitrogen fertilizer recommendations. A management guide was published outlining management recommendations for Russet Norkotah and its related line selections. A third year of characterization was completed on a population segregating for resistance to corky ringspot that will be used to identify gene markers for resistance. Disease pressure this past year was exceptional and the characterization effective. Efforts on this project are now being directed at identifying AFLP markers associated with corky ringspot resistance. In a quality related study, it was determined that the viscoanalyzer can effectively detect
differences in tuber quality as related to baked and fried product texture. Both before and after storage, a strong correlation emerged between viscoanalyzer measurements and consumer preference as determined by a sensory panel. The second year of a potato drought study, with an objective to determine whether variety choice is a viable management factor in dealing with irrigation water shortages, was completed. Results from the first year of the study show distinct differences among varieties for response to limited water availability.
Impacts
This research is the Idaho component of the Northwest Potato Variety Development Program (Tri-State). This project has had a positive influence on the Northwest potato industry through the release of new varieties that provide advantages of disease resistance, productivity, production efficiency, and tuber quality. Added value of variety releases is now estimated at approximately $135 million. Adoption of new varieties with resistance to many diseases and physiological problems is expected to provide positive environmental impacts through the reduction of pesticide usage and nitrate leaching. Increasingly rapid adoption of the varieties being released will increase the impact over the life of the project. The ultimate impact of the project will be to maintain the competitiveness of the Northwest industry in an increasingly competitive global market.
Publications
- Love. S.L., Novy, R., Corsini, D., Bain, P., Salaiz, T., Later, L., Stimpson, J. and Mosley, A. 2003. Idaho. Nat. Potato Germplasm Eval. Rept., 2001, 72:96-110.
- Bohl, W.H. and Love, S.L. 2003. Cultural management of Russet Norkotah potatoes. Idaho Agric. Exp. Sta. Current Info. Series No. 1106.
- Brandt, T.L., Kleinkopf, G., Olsen, N. and Love, S. 2003. Storage management for Umatilla Russet potatoes. Idaho Agric. Exp. Sta. Bull. No. 839.
- Love, S.L., Novy, R., Corsini, D.L. and Bain, P. 2003. Variety selection and management. In J.C. Stark and S.L. Love (Eds.), Potato Production Systems. University of Idaho Agricultural Communications, Moscow, Idaho.
- Love, S.L., Mosley, A.R., Novy, R., Corsini, D.L., Thornton, R.E., James, S.R. and Hane, D.C. 2003. Ivory Crisp: A potato variety with high tuber solids and cold chipping ability. Amer. J. Potato Res. 80:207-213.
- Hane, D.C., Mosley, A.R., James, S.R., Rykbost, K.A., Shock, C.C., Love, S.L., Corsini, D.L., Pavek, J.J., Thornton, R.E., Charlton, B.A., Eldredge, E.P. and Yilma, S. 2003. Wallowa Russet: A full season long russet for processing and fresh market. Amer. J. Potato Res. 80:289-294.
- Rykbost, K.A., James, S.R., Mosley, A.R., Charlton, B.A., Hane, D.C., Eldredge, E., Voss, R., Johansen, R.H. Love, S.L. and Thornton, R.E. 2001. Modoc: A potato variety with bright red skin and early maturity for fresh market. Amer. J. Potato Res. 80:235-240.
- Higley, J.S., Love, S.L., Price, W.J., Nelson, J.E. and Huber, K.C. 2003. The rapid visco analyzer (RVA) as a tool for differentiating potato cultivars on the basis of flour pasting properties. Amer. J. Potato Res. 80:195-206.
- Araji, A.A. and Love, S. 2002. The economic impact of investment in the Pacific Northwest potato variety development program. Amer. J. Potato Res. 79:411-420.
- Novy, R.G., Corsini, D.L., Love, S.L., Pavek, J.J., Mosley, A.R., James, S.R., Hane, D.C., Shock, C.C., Rykbost, K.A., Brown, C.R. and Thornton, R.E. 2003. Alturas: A multi-purpose russet potato cultivar with high yield and tuber specific gravity. Amer. J. Potato Res. 80:295-301.
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Progress 01/01/02 to 12/31/02
Outputs
One new variety, Summit Russet, was approved for release in 2002. This new russet type variety is resistant to most common field diseases and produces a high percentage on U.S. No. 1 tubers with very high fresh market and processing quality. Pre-Nuclear mini-tubers are currently being produced for distribution to seed growers in the spring of 2003. Cooperative research and breeding with Oregon State University and Washington State University was continued and overall efforts increased. The number of seedlings handled by the Tri-State group in the first generation was increased from 210,000 to 240,000. In 2002, 32 trials were grown at seven locations throughout southern Idaho. Included were variety trials, management studies, germplasm enhancement studies, and seed increases. Improvements in germplasm resistant to corky ringspot were evident in 2002. High levels of resistance were found in clones with russet skin, long shape, and good internal quality. Three or four of
these clones will be intensively evaluated for yield and quality. A second year of characterization was completed on a population segregating for resistance to corky ringspot that will be used to identify gene markers for resistance. Disease pressure this past year was exceptional and the characterization effective. A study to characterize North American germplasm for vitamin C content was completed and prepared for publication. A three- to four-fold range of vitamin C content was found among commonly used parental germplasm. Several of the clones with high levels of vitamin C were intercrossed to begin a recurrent selection program to test the upper limit. In a quality related study, it was determined that the viscoanalyzer can effectively detect differences in tuber quality as related to baked and fried product texture. Both before and after storage, a strong correlation emerged between viscoanalyzer measurements and consumer preference as determined by a sensory panel. The first
year of an irrigation study was completed. One objective of the study was to determine whether variety choice is a viable management factor in dealing with irrigation water shortages. Early indications from the study show distinct differences among varieties for response to limited water availability.
Impacts
This research is the Idaho component of the Northwest Potato Variety Development Program (Tri-State). This project has had a positive influence on the Northwest potato industry through the release of new varieties that provide advantages of disease resistance, productivity, production efficiency, and tuber quality. Added value of variety releases is now estimated at approximately $135 million. The germplasm base for the breeding project continues to improve and the impact is expected to be greater each year of the life of the project. The ultimate impact of the project will be to maintain the competitiveness of the Northwest industry in an increasingly competitive global market.
Publications
- Novy, R.G., D.L. Corsini, S.L. Love, J.J. Pavek, A.R. Mosley, S.R. James, D.C. Hane, C.C. Shock, K.A. Rykbost, C.R. Brown, and R.E. Thornton. 2002. Bannock Russet: a dual-purpose russet potato cultivar with high U.S. No. 1 yield and multiple disease resistances. Amer. J. Potato Res. 79:147-153.
- Brown, C.R., H. Mojtahedi, G.S. Santo, P. Hamm, R. Novy, D. Corsini, S. Love, and S. James. 2001. Defending the profitability of growing potato in the Columbia Basin: development of corky and Columbia root-knot nematode resistant germplasm. Amer. J. Potato Res. 78:446.
- Love, S.L., T.A. Salaiz, J.J. Pavek, and C.R. Brown. 2001. Development of russet-type germplasm with resistance to corky ringspot. Amer. J. Potato Res. 78:467.
- Salaiz, T.S., S.L. Love and P.E. Patterson. 2001. Economic performance of Gem Russet (A8495-1) and A84118-3 as compared to Russet Burbank using a fresh pack model. Amer. J. Potato Res. 78:480.
- Bamberg, J., S. Love, D. Corsini, and K. Deahl. 2001. Fine screening potato germplasm for high leaf and low tuber glycoalkaloids. Amer. J. Potato Res. 78:443.
- Love., R. Novy, D. Corsini, P. Bain, T. Salaiz, L. Later, J. Stimpson, and A. Mosley. 2002. Idaho. Nat. Potato Germplasm Eval. Rept., 2001, 72: (in press).
- Bohl, W.H., S.L. Love, D.L. Corsini, J.C. Stark, and N. Olsen. 2002. Cultural management of Bannock Russet potatoes. Idaho Agric. Exp. Sta. Current Info. Series No. 1103.
- Bain, P. and S.L. Love. 2002. Tri-state potato variety trials, 2001. Idaho Agric. Exp. Sta. Progress Rept. No. 357.
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Progress 01/01/01 to 12/31/01
Outputs
Two new varieties, Alturas and Ivory Crisp, were released. Alturas is a high yielding, high solids potato developed specifically to supply supplemental raw product for the dehydration industry. It is projected that 10,000 acres will be produced in 2002. Ivory Crisp is the first cold chipper to be released that is adapted to Northwest growing conditions. It has the ability to provide high quality chip stock from long term storage, a rarity among chippers. It is being used for chip production in southern Idaho and has also been accepted by a significant number of growers in North Dakota and Minnesota. In 2001, over 190 potato clones were evaluated in 30 trials at six sites located across southern Idaho. These trials included evaluations of yield, tuber quality, processing performance, storability, disease resistance, and response to agronomic inputs. Continued efforts were made to identify resistance to corky ringspot in germplasm with processing quality. It was
discovered that the late blight resistant clone A90586-11 has a relatively high level of resistance to this disease. Characterization of resistance in three segregating populations was initiated as the first step in identifying selectable markers. A graduate student was recruited to continue this project. A project was initiated in 1999 to improve the vitamin C content of the Northwest breeding germplasm base. Clones with high levels of vitamin C were crossed in the green house in the spring of 2001. True seed is being prepared for grow out and evaluation, representing the first cycle of recurrent selection. High vitamin C x low vitamin C crosses were also made and will be used for determination of the inheritance of vitamin C in potato. It was determined that the viscoanlyzer can detect differences in starch characteristics among varieties with a range of processing quality. In 2001, storage research was conducted to determine if this instrument can be used to detect changes in
quality that occur during storage. Initial sensory evaluations were completed and it was found that there is a strong correlation between the viscoanalyzer values and preference for cooked products. Additional research time was put into management studies for new varieties and the management x variety interactions that result, including studies on planting depth, hilling practices, plant population, herbicide response, and fertility. An extensive nitrogen study was completed in 2001, documenting nitrogen effects on dry matter partitioning, yield, and quality of some to the new varieties. The study showed Bannock Russet and A84118-3 each have a high degree of nitrogen use efficiency.
Impacts
This research is one component of the Tri-state potato variety development project. This project has had a positive multi-million dollar impact on the Northwest potato industry through the release of varieties with improved yield, disease resistance, production efficiency, and tuber quality. Given that the germplasm that forms the basis for this research continues to improve, the economic impact of imminent variety releases will have a similar positive impact.
Publications
- Love, S.L., Novy, R., Corsini, D.L., Pavek, J.J., Mosley, A.R., Thornton, A.E., James, S.R., Hane, D.C. and Rykbost, K.A. 2001. IdaRose: a potato variety with bright red skin, excellent culinary quality, and long tuber dormancy. Amer. J. Potato Res. (in press).
- Love, S.L., Novy, R., Corsini, D.L., Pavek, J.J., Mosley, A.R., Thornton, R.E., James, S.R. and Hane, D.C. 2001. Gem Russet: a long russet potato variety with excellent fresh market and French fry processing quality. Amer. J. Potato Res. (in press).
- Love, S., Novy, R., Corsini, D., Bain, P., Later, L., Stimpson, J. and Mosley, A. 2001. Idaho. Nat. Germplasm Evaluation Rept. 71:(in press).
- Love, S.L., Bohl, W.H., Corsini, D.L., Stark, J.C. and Olsen, N. 2001. Cultural management of Gem Russet potatoes. Idaho Agric. Exper. Station Current Info. Series No. 1093.
- Araji, A.A. and Love, S.L. 2001. The benefits of public investments in the Northwest potato breeding research. Idaho Agric. Exper. Station Bull. No. 822.
- Bain, P. and Love, S.L. 2001. Tri-state potato variety trials. Idaho Agric. Exper. Station Rept. No. 345.
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