POTATO BREEDING AND CULTIVAR DEVELOPMENT IN THE SOUTHWEST

• Sponsoring Institution: National Institute of Food and Agriculture
• Project Status: COMPLETE
• Funding Source: SPECIAL GRANT
• Reporting Frequency: Annual
• Accession No.: 1007165
• Grant No.: 2015-34141-23965
• Cumulative Award Amt.: $360,750.00
• Proposal No.: 2015-06825
• Project Start Date: Sep 1, 2015
• Project End Date: Aug 31, 2017
• Grant Year: 2016
• Program Code: [AN]- Potato Research

Recipient Organization
COLORADO STATE UNIVERSITY
(N/A)
FORT COLLINS,CO 80523

Performing Department
San Luis Valley Research Stn.

Non Technical Summary
The Southwestern Regional Potato Cultivar Development Project was initiated by Colorado State University, Texas A&M University, and the University of California at Davis to meet the unique needs of the Southwest potato industry. Crosses and original selections are made in Colorado and Texas followed by formal regional evaluation trials in all three states. Breeding stocks and advanced selections are openly shared with more than a dozen other states. Promising selections from the Project are further evaluated in the Western Regional Trials which include seven Western states. Specific goals and objectives are developed and constantly reevaluated based on extensive stakeholder input. Since the inception of the Southwestern Regional Potato Cultivar Development Project in 1997, 45 new cultivars and clonal selections have been released or co-released with other institutions which make up substantial and increasing portions of the regional potato acreage and have become important contributors to the economies of the states. Of newly released cultivars since 1997, and ranking in the top 50 cultivars that were accepted for seed certification in the US in 2014, cultivars developed by the Southwestern Regional Potato Cultivar Development Project ranked first among the regional projects.

Animal Health Component

70%

Research Effort Categories

Basic

10%

Applied

70%

Developmental

20%

Classification

Knowledge Area (KA)	Subject of Investigation (SOI)	Field of Science (FOS)	Percent
202	1310	1081	10%
203	1310	1010	10%
203	1310	1020	10%
203	1310	1081	20%
205	1310	1010	10%
205	1310	1020	10%
212	1310	1081	15%
502	1310	1081	15%

Knowledge Area
212 - Pathogens and Nematodes Affecting Plants; 205 - Plant Management Systems; 203 - Plant Biological Efficiency and Abiotic Stresses Affecting Plants; 202 - Plant Genetic Resources; 502 - New and Improved Food Products;

Subject Of Investigation
1310 - Potato;

Field Of Science
1081 - Breeding; 1010 - Nutrition and metabolism; 1020 - Physiology;

Keywords

cultural management

disease resistance

nutritional characteristics

potato breeding

Goals / Objectives
The overall aim of this project is to develop and evaluate improved potato cultivars that meet the unique production, marketing, environmental, and consumer needs of the Southwest. This will be achieved by addressing the following objectives. Objective 1. Develop russet, red, white, chip, and specialty cultivars, as well as line selections where appropriate, for both the fresh and processing markets of the Southwest. These cultivars will complement those developed by breeding programs in other areas of the U.S. Objective 2. Evaluate germplasm and/or advanced selections including entries in the Southwestern, Western Regional, and the National Chip Processing and Fry Processing Trials under diverse environmental, production, and postharvest conditions for traits important to the potato industry including yield, quality, marketability, consumer acceptance, culinary quality, and enhanced human health benefits. Objective 3. Determine cultural practices for successful sustainable and economic production of advanced clonal selections and newly released cultivars, which optimize their genetic potential, while minimizing economic inputs and environmental impact. Objective 4. Screen a wide range of germplasm and/or advanced selections for resistance to pests and other characteristics of economic importance to potato production in the Southwest and incorporate this material into the breeding programs. Objective 5. Provide a quality, uniform seed source of advanced selections to growers and other research cooperators to facilitate assessment of commercial adaptability, marketability, and other important characteristics.

Project Methods
1. Parents with desired characteristics will be hybridized at Colorado State University and Texas A&M University. Unselected seedling and early generation tubers will be received from and sent to several other breeding programs within the US and Canada. Approximately 200,000 seedlings will be grown for initial selection in Colorado and Texas. 2. Early and advanced generations of selected clones will be evaluated at a number of locations in Colorado, Texas, and California, and ultimately in the uniform Southwestern Regional Trial (SWRT) in at least four locations within the region. These multiple sites represent diverse soil types, climates, and pest ecologies. Clones are entered for evaluation in the SWRT for one to three years. Top entries are then graduated to the Western Regional Trials (WRT) for up to three years and superior clones are released as new varieties. 3. Specific trials will be conducted to determine appropriate fertility requirements, suitable plant population, herbicide tolerance, seed size, irrigation requirements, seed preparation (precutting or use of single drop seed), and vine kill management. Other management practices requiring attention will be identified during researcher and stakeholder evaluation. Procedures involved will include comparing different rates of plant nutrients, precutting vs. whole seed, irrigation application rate, effect of seed size, vine killing date and time lag between vine kill and harvest, different within-row plant spacings, and tolerance to pre- and post-emergence application of herbicides to determine the scenario which maximizes yield, quality and is economically and environmentally sound, for a given selection or cultivar. Storability, including effects of storage temperature and humidity, and length of storage time on advanced selections/new cultivars will be assessed. These clone specific requirements will be determined cooperatively and in respective states. 4. Pests and diseases that will be emphasized in screening and identification of superior parental materials. Abiotic stresses that result in heat necrosis, growth cracks, sugar build-up, brown center, hollow heart, and heat sprouting will be assessed for occurrence. Possible environmental and cultural factors within a given season as well as resistance/susceptibility will be noted. 5. Advanced selections will be introduced into tissue culture to develop disease-tested micropropagated seed stocks.

Progress 09/01/15 to 08/31/17

Outputs
Target Audience:The long-term process of potato cultivar development involves many target audiences. Included are potato growers,shippers, processors, research and extension personnel, the food distribution system, and the consumer. We also provide student internships to secondary and undergraduate students. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided? Nothing Reported How have the results been disseminated to communities of interest?A number of meetings with grower groups, research advisory committees, and numerous individual stakeholders are held to review research results and seek input into future activities. Project leader participation in regional/national meetings and forums associated with the National Chip Processing Trials, National Fry Processing trials, Southwest Regional Trials, Western Regional Potato Trials, and the Potato Association of America provide primary forums for national stakeholder interaction. Additionally field days/openhouses provide growers with a forum for feedback regarding potato breeding and cultivar development efforts. What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? Impact Statement 1: Of the top 20 russet cultivars produced for seed in 2016, nine were developed by the Colorado and Texas programs, [Russet Norkotah (RN) 296, RN S3, RN 278, RN 112, RN S8, Canela Russet, Centennial Russet, Rio Grande Russet, and Silverton Russet). Impact Statement 2: Russet Norkotah has been the most popular fresh market russet variety grown in the US. The highly successful Russet Norkotah clonal selections, developed by the Texas and Colorado programs, comprised almost 78% of the total 'Russet Norkotah' acreage accepted for certification in the US in 2016. The RN selections not only yield more but also require lower fertilizer inputs than Russet Norkotah. In 2016, these selections collectively represented the second most popular cultivar grown in the US, behind only Russet Burbank. Accomplishments: Each year the states in the Southwestern Regional Cultivar Development Program have several advanced selections available for grower evaluation. In 2016, it included 22 from Texas and 53 from Colorado. Many of these selections are undergoing final stages of grower evaluation prior to naming and/or are currently available for exclusive release. New cultivars recently released include Crestone Russet (CO99053-3RU), Fortress Russet (AC99375-1RU), Masquerade (AC99329-7PW/Y), Mercury Russet (CO99100-1RU), Harvest Moon (AC99330-1P/Y), Red Luna (CO97233-3R/Y), Top Cat (TC1675-1RU), and Aspen Russet (CO95086-8RU) from Colorado, Sierra Rose (ATTX961014-1R/Y), and Reveille Russet (ATX91137-1Ru) from Texas. Upcoming releases/anticipated releases include Harlequin Gold (NDTX059759-3RY/Y), Vanguard Russet (TX08352-5Ru), Crimson King (CO97222-1R/R) and Winterset (CO02321-4W). In addition, Southwest cooperators participate in joint releases of cultivars with states in other regions. The Southwestern Regional Trials generally includes russet, specialty, red, and chip selections in addition to appropriate check cultivars for comparison purposes. The 2015 Southwestern Regional Trial included two russets (CO07015-4RU and CO07049-1RU), two yellows (CO07131-1W/Y and CO07370-1W/Y), one red (CO07102-1R), and two chip (CO07070-10W and CO07070-13W) selections. The two chip selections were advanced to the 2016 Western Regional Chip Trial. The 2016 Southwestern Regional Trial included three russets (CO08065-2RU, CO08155-2RU/Y, and CO08231-1RU), two reds (COTX00104-6R and NDC081655-1R), and one chip (AC01144-1W) selection. Five selections from this trial were advanced to the 2017 Western Regional Trial. COTX00104-6R was advanced to the Red/Specialty Trial, CO08065-2RU, CO08155-2RU/Y, and CO08231-1RU to the Russet Trial, and AC01144-1W to the Chip Trial. The 2017 Southwestern Regional Trials will include russet and specialty selections. Each trial site will consist of the following: russet trial (AOTX05043-1RU, CO09036-2RU, CO09076-3RU, CO09165-6W, CO09205-2RU, and COTX05095-2RU with Russet Norkotah as the check), yellow flesh trial (CO09079-5PW/Y, CO09127-3W/Y, CO09128-3W/Y, CO09128-5W/Y, and CO09218-4W/Y with Yukon Gold as the check), and the colored flesh trial (CO08037-2P/P and Purple Majesty as the check). Complete results (2005-2016) of the Southwestern trial are found on the Texas potato website (potato.tamu.edu). Cultural Management Studies - Cultural management studies aim to establish cultivar-specific management guidelines for the successful, sustainable, and economic production of advanced breeding selections and recently released cultivars. These guidelines assist in optimizing the genetic potential of new cultivars while minimizing economic inputs and environmental degradation. Both in 2015 and 2016 numerous horticultural evaluations were conducted. For example, in 2016, 24 potato cultivars and advanced selections were evaluated in 17 trials at eight locations in the San Luis Valley of Colorado. Cultivars evaluated included 13 russets, two reds, four yellows, and five chippers. The trials assessed the influence of different cultural management practices on plant growth and development, tuber yield, tuber size distribution, and tuber quality of the cultivars studied, to establish optimum management guidelines for each cultivar. In other studies, for Fortress Russet the optimum available N rate is 170lb/acre. Approximately 33% of the N should be applied pre-plant and the remainder in season after tuber formation. In- row spacing should be 13-14 inches for optimum yield. For Mesa Russet, potassium acetate (a relatively new potassium formulation) resulted in higher yields than potassium chloride. It should be applied either pre- or at-planting rather than in-season. In deficit irrigation studies Rio Grande Russet has similar total and marketable yield with 16 inches of applied water compared to 19 inches based on an evaporation-transpiration model. Another deficit irrigation study investigated the performance of four potato cultivars. Deficit irrigation treatments included reducing irrigation water by 10-45% of required evapotranspiration (ET) replacement. Results obtained from the study indicate that Russet Norkotah and Yukon Gold require maximum ET replacement to maximize tuber yield. Canela Russet can maximize tuber yield with 18% less ET replacement water. Mesa Russet can maximize tuber yield with 10% less ET replacement water. Results from this study indicate that potato selections and cultivars can vary in their irrigation water requirements. Another study with thirteen advanced selections from the CSU Potato Breeding and Selection Program were evaluated under potato grower management conditions to determine yield stability as well as best management practices. Two russet cultivars were observed to have high tuber yield under all grower conditions. Spacing and fertility management studies were conducted in Texas on three upcoming releases. Two cultural management studies were conducted in Tulelake in 2015 and 2016. One management study evaluated blackspot and white knot bruising on russet entries after 60, 90, and 120 days in storage. The study was established to determine if bruise potential for new selections after storage differs from bruise potential at harvest. Bruise susceptibility information is important to fresh market producers, especially since many new selections have greater weight loss in storage compared to Russet Norkotah. The other management study evaluated the appearance and quality of red and yellow skin specialty varieties after storage and commercial polishing. A survey of CA producers showed appearance of specialty varieties after polishing was one of the most important characteristics they use in selecting specialty varieties to grow and sell.

Publications

• Type: Journal Articles Status: Published Year Published: 2017 Citation: Endelman, J. B., Schmitz, C. A., Douches, D. S., Coombs, J. J., Bizimungu, B., DeJong, W. S., Haynes, K. G., Holm, D. G., Miller, J. C., Jr., Navarro, F. M., Novy, R. G., Palta, J. P., Porter, G. A., Sathuvalli, V. R., Thompson, A. L., and Yencho, G. C. 2016. Pedigree reconstruction with genome-wide markers in potato. Amer. J. Potato Res. 94:184-190.
• Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Heuberger, A. L, Chaparro, J., and Holm, D. G. 2017. Metabolite and mineral variation in a diverse set of potato cultivars and implications to breeding for human health. Am. J. Potato Res. 94:227. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Holm, D. G., Gray, C. P., Jayanty, S. S., and Larson, K. M. 2017. Breeding for high carotenoid content in the Colorado Potato Breeding and Selection Program. Am. J. Potato Res. 94:227-228. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Bough, R. A., Jayanty, S. S., and Holm, D. G. 2017. Profiling and prediction of fresh market potato flavor using sensory and chemical analysis. Am. J. Potato Res. 94:215. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Zavislan, K. A., Holm, D. G., Gray, C. P., Essah, S. Y. C., Jayanty, S. S., Davidson, R. D., and Houser, A. J. 2017. Fortress Russet: A disease resistant potato cultivar from the Colorado Potato Breeding and Selection Program. Am. J. Potato Res. 94:249. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Essah, S. Y. C., Andales, A. A., and Bauder, T. 2017. Deficit irrigation in early and medium to late maturity potato cultivars. Am. J. Potato Res. 94:221. (Abstract).
• Type: Other Status: Other Year Published: 2017 Citation: Holm, D. G., Gray, C., and Zavislan, K. 2017. 2016 Potato Breeding and Selection Research Report to the Colorado Potato Administrative Committees (Area II and Area III). 113pp.
• Type: Other Status: Other Year Published: 2016 Citation: Holm, D. G., Gray, C., Zavislan, K. 2016. 2016 Open House and Advanced Selection Evaluation Meeting: Colorado advanced potato selections data summary. 49pp. (Unpub).
• Type: Other Status: Other Year Published: 2017 Citation: Holm, D. G. and Gray, C. 2017. 2017 Open House and Advanced Selection Evaluation Meeting: Colorado advanced potato selections data summary. 45pp. (Unpub).
• Type: Other Status: Other Year Published: 2017 Citation: Miller, C., Koym, J., and Scheuring, D. 2017. Texas Potato Breeding Report, 2016. Texas A&M AgriLife Research, College Station and Lubbock. 320pp.
• Type: Other Status: Other Year Published: 2017 Citation: Miller, J. C., Jr., Koym, J. W, Scheuring, D. C. 2017. Southwest Regional Potato Variety Trial Report 2016. Texas A&M AgriLife Research, College Station and Lubbock. 20pp.
• Type: Other Status: Other Year Published: 2017 Citation: Miller, J. C., Jr., Koym, J. W, Scheuring, D. C. 2017. Western Regional Red/Specialty Trial Report 2016. Texas A&M AgriLife Research, College Station and Lubbock. 26pp.
• Type: Journal Articles Status: Awaiting Publication Year Published: 2017 Citation: Miller, J. C., Jr., Scheuring, D. C., Koym, J. W., Holm, D. G., Pavek, J. J., Novy, R. G., Whitworth, J. L., Stark, J. C., Charlton, B. A., Yilma, S., Knowles, N. R., Pavek, M. J., Nunez, J. J., Wilson, R., Brown, C. R., Shock, C. C., and Long, C. M. 2017. Reveille Russet: an early, widely adapted, high-count-carton russet for the fresh market. Am. J. Potato Res. 94: (Awaiting Publication).
• Type: Other Status: Other Year Published: 2016 Citation: Holm, D. G., Gray, C., and Zavislan, K. 2016. 2015 Potato Breeding and Selection Research Report to the Colorado Potato Administrative Committees (Area II and Area III). 122pp.
• Type: Other Status: Other Year Published: 2017 Citation: Miller, C., Vales, I., Koym, J., and Scheuring, D. 2017. 2017 Field Day Handbook. July 13, 2017. Texas Potato Variety Development Program. Texas A&M AgriLife Research, College Station and Lubbock. 42pp.
• Type: Other Status: Other Year Published: 2017 Citation: Wilson, R., et.al. 2017. 2016 Progress Report. 2016 Potato Variety Development in Tulelake, CA. Intermountain Research and Extension Center Research Progress Report #174. Cooperative Extension, University of California. 24pp.

Progress 09/01/15 to 08/31/16

Outputs
Target Audience:The long-term process of potato cultivar development involves many target audiences. Included are potato growers, shippers, processors, research and extension personnel, the food distribution system, and the consumer. We also provide student internships to secondary and undergraduate students. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided? Nothing Reported How have the results been disseminated to communities of interest?A number of meetings with grower groups, research advisory committees, and numerous individual stakeholders are held to review research results and seek input into future activities. Project leader participation in regional/national meetings and forums associated with the National Chip Processing Trials, National Fry Processing trials, Southwest Regional Trials, Western Regional Potato Trials, and the Potato Association of America provide primary forums for national stakeholder interaction. Additionally field days/openhouses provide growers with a forum for feedback regarding potato breeding and cultivar development efforts. What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? Impact Statement 1: Of newly released cultivars since 1997 (when the Southwest Program was initiated), ranking in the top 50 cultivars that were accepted for seed certification in the US in 2014, cultivars developed in the Southwest Region ranked second in seed acreage among the four regional projects - slightly behind the Northwest and substantially ahead of the North Central and North East Projects, thus validating the productivity of this project. Accomplishments: Of the top 20 russet cultivars produced for seed in 2015, eight were developed by the Colorado and Texas programs, (RN 296, RN S3, RN 278, RN 112, Canela Russet, Silverton Russet, RN S8, and Rio Grande Russet). Currently the states in the Southwestern Regional Cultivar Development Program have several advanced selections available for grower evaluation. These include 22 from Texas and 51 from Colorado. Many of these selections are undergoing final stages of grower evaluation prior to naming and/or are currently available for exclusive release. New cultivars recently released include Crestone Russet (CO99053-3RU), Fortress Russet (AC99375-1RU), Masquerade (AC99329-7PW/Y), Mercury Russet (CO99100-1RU), Harvest Moon (AC99330-1P/Y), Red Luna (CO97233-3R/Y), Top Cat (TC1675-1RU), and Aspen Russet (CO95086-8RU) from Colorado and Sierra Rose (ATTX961014-1R/Y) and Reveille Russet (ATX91137-1Ru) from Texas. Releases/anticipated releases in 2015 include Red/Yellow Calico (NDTX059759-3RY/Y Pinto), Vanguard Russet (TX08352-5Ru), CO97222-1R/R (Crimson King), and CO02321-4W (Winterset). In addition, Southwestern cooperators participate in joint releases of cultivars cooperatively with states in other regions. The 2015 Southwestern Regional Trials included russet and specialty selections. Each trial site consisted of the following: russet trial (two selections; one check), yellow flesh trial (two selections; one check), red trial (one selection; two checks) and a chip trial (two selections and two checks). Colorado entered one red (CO07102-1R) selection, two chip (CO07070-10W and CO07070-13W) selections, two yellow flesh (CO07131-1W/Y and CO07370-1W/Y) selections, and two russets (CO07015-4RU and CO07049-1RU). Results of this trial were discussed in detail at the Southwestern Regional Group meeting February 2, 2016 in Ft. Collins, CO. Entries for the 2016 Southwestern Regional Trial were also solicited. Two selections from the 2015 trial were advanced to the 2016 Western Regional Trial Chip Trial, (CO07070-10W and CO07070-13W). Complete results (2005-2015) of the Southwestern trial can be found on the Texas potato website (potato.tamu.edu). Associated Trials and Locations - In 2015 there were a number of other trials with multiple test/evaluation sites in the three collaborating states. For example, the Texas program evaluated selections with grower cooperators at two locations, near Springlake on the southern High Plains (21 replicated trials), and near Dalhart at the northwest corner of the panhandle (20 replicated trials). Multiple trials were also conducted at Weslaco, TX, on the Mexican border. These trials were conducted from January through October. In addition, advanced selections from the Texas program were evaluated in Florida, Michigan, Nebraska, North Carolina, North Dakota, Oregon, Idaho, Wisconsin and New Brunswick, Canada. In California, russet, red, white, and specialty potatoes are planted or harvested almost every day of the year. Historically, California's potato acreage consists of 28% winter, 44% spring, 8% summer, and 20% fall. California's harvested potato acreage totaled 33,300 in 2014 Primary test sites for California were Bakersfield in Southern California and Tulelake near the Oregon border. The diverse climate in California allows California cooperators to evaluate selections in Bakersfield during winter, spring, and summer months and Tulelake during spring, summer, and fall. California currently lacks a public potato breeding program and instead works closely with the Southwestern and Western Regional programs. Southwestern selections were evaluated in Bakersfield and Tulelake in 2015. Over 200 advanced selections/cultivars were evaluated in replicated trials in Bakersfield in 2015. Work in Tulelake included evaluation of 51 advanced selections in three replicated trials. Evaluations included plant growth, tuber yield, tuber size and grade, internal and external qualities, and pest resistance. Verticillium wilt susceptibility screening was conducted on all Southwest selections in Tulelake. Colorado trials were conducted in the San Luis Valley, near Center, and with growers in Northern Colorado near Greeley and Wray. Additional trials, outside the Southwestern and Western Regional area, with advanced Colorado selections, included Florida, Maine, Maryland, Michigan, Missouri, Minnesota, New York, North Carolina, North Dakota, Pennsylvania, Wisconsin, as well as Alberta and Quebec, Canada. Colorado and Texas will again participate in the National Fry Processing Trial (Texas has four entered and Colorado three). Texas will have 12 entries in the National Chip Processing trial this year and Colorado will have eight entries. Cultural Management Studies - Cultural management studies aim to establish cultivar-specific management guidelines for the successful, sustainable, and economic production of advanced breeding selections and recently released cultivars. These guidelines assist in optimizing the genetic potential of new cultivars while minimizing economic inputs and environmental degradation. In 2015, horticultural evaluations were conducted on 26 potato cultivars and advanced selections in 16 trials at 10 locations in the San Luis Valley of Colorado. Tests included 12 russets, five specialties, three reds, four yellows, and two chippers. The trials assessed the influence of different cultural management practices on plant growth and development, tuber yield, tuber size distribution, and tuber quality of the cultivars studied, in an effort to establish optimum management guidelines for each cultivar. In other studies, for Fortress Russet the optimum available N rate is 170lb/acre. Approximately 33% of the N should be applied pre-plant and the remainder in season after tuber formation. In- row spacing should be 13-14 inches for optimum yield. For Mesa Russet, potassium acetate (a relatively new potassium formulation) resulted in higher yields than potassium chloride. It should be applied either pre- or at-planting rather than in-season. In deficit irrigation studies Rio Grande Russet has similar total and marketable yield with 16 inches of applied water compared to 19 inches based on an evaporation-transpiration model. Spacing and fertility management studies were conducted in Texas on three upcoming releases. Two cultural management studies were conducted in Tulelake in 2015. One management study evaluated black spot and white knot bruising on russet entries after 60, 90, and 120 days in storage. The study was established to determine if bruise potential for new selections after storage differs from bruise potential at harvest. Bruise susceptibility information is important to fresh market producers, especially since many new selections have greater weight loss in storage compared to Russet Norkotah. The other management study evaluated the appearance and quality of red and yellow skin specialty varieties after storage and commercial polishing. A survey of CA producers showed appearance of specialty varieties after polishing was one of the most important characteristics they use in selecting specialty varieties to grow and sell.

Publications

• Type: Journal Articles Status: Published Year Published: 2015 Citation: Barnett, B. A., Holm, D. G., Koym, J. W., Wilson, R. G., and Manter, D. K. 2015. Site and clone effects on the potato root-associated core microbiome and its relationship to tuber yield and nutrients. Am. J. Potato Res. 92:1-9.
• Type: Conference Papers and Presentations Status: Published Year Published: 2015 Citation: Essah, S. Y. C. and Holm, D. G. 2015. Timing of nitrogen fertilizer application for increased N use efficiency in potato production of new russets from Colorado State University. Am. J. Potato Res. 92:187. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2015 Citation: Gray, C. P., Holm, D. G., Essah, S. Y. C., Jayanty, S. S., and Davidson, R. D. 2015. Crestone Russet and Mercury Russet: Two new russet cultivars from the Colorado Potato Breeding and Selection Program. Am. J. Potato Res. 92:190. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2015 Citation: Holm, D. G., Gray, C. P., Essah, S. Y. C., Jayanty, S. S., and Davidson, R. D. 2015. Masquerade, Midnight Moon, and Red Luna: Three new specialty potato cultivars from the Colorado Potato Breeding and Selection Program. Am. J. Potato Res. 92:192. (Abstract).
• Type: Other Status: Published Year Published: 2015 Citation: Holm, D. G. and Gray, C. 2015. 2014 Potato Breeding and Selection Research Report to the Colorado Potato Administrative Committees (Area II and Area III). 100pp. (Unpub).
• Type: Other Status: Published Year Published: 2015 Citation: Holm, D. G., Gray, C., Zavislan, K. 2015. 2015 Open House and Advanced Selection Evaluation Meeting: Colorado advanced potato selections data summary. 43pp. (Unpub).
• Type: Conference Papers and Presentations Status: Published Year Published: 2015 Citation: Kammlade, S. M., Holm, D. G., Essah, S. Y. C., and Stromberger, M. 2015. The influence of agromanagement on potato mineral nutrients. Am. J. Potato Res. 92:194. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2015 Citation: Markham, L., Reddivari, L., Ursell, L. K., Holm, D., Ziegler, G., Knight, R., Vanamala, J. 2015. Potatoes cant take the heat: Effects of cultivar and processing on global metabolite/nutritional profiles. Am. J. Potato Res. 92:175. (Abstract).
• Type: Journal Articles Status: Published Year Published: 2015 Citation: Miller, J. C., Jr, Scheuring, D. C., Koym, J. W., Holm, D. G., Pavek, J. J., Novy, R. G., Whitworth, J. L., Stark, J. C., Charton, B. A., Yilma, S., Knowles, N. R., Pavek, M. J., Nunez, J. J., Shock, C. C., Brown, C. R. 2015. ATTX961014-1R/Y a.k.a. Sierra RoseTM: A red-skin, yellow-flesh potato cultivar for the specialty/gourmet market. Am. J. Potato Res. 92:491-496.
• Type: Journal Articles Status: Published Year Published: 2015 Citation: Wang, Y., Bethke, P. C., Bussan, A. J., Glynn, M. T., Holm, D. G., Navarro, F. M. Novy, R. G., Palta, J. P., Pavek, M. J., Porter, G. A., Sathuvalli, V. R., Thompson, A. L. Voglewede, P. J., Whitworth, J. L., Parish, D. I., Endelman, J. B. 2015. Acrylamide-forming potential and agronomic properties of elite us potato germplasm from the national fry processing trial. Crop Sci. 56:30-39.
• Type: Journal Articles Status: Published Year Published: 2016 Citation: Jansky, S. H., Charkowski, A. O., Douches, D. S., Gusmini, G., Richael, C., Bethke, P. C., Spooner, D. M., Novy, R. G, DeJong, H., DeJong, W. S., Bamberg, J. B., Thompson, A. L. Thompson, Bizimungu, B., Holm, D. G., Brown, C. R., Haynes, K. G., Sathuvalli, V. R., Veilleux, R. E., Miller, J. C., Jr., Bradeem, J. M., and Jiang, J. M. 2016. Reinventing potato as a diploid inbred line-based crop. Crop Science. 56:1412-1422.
• Type: Conference Papers and Presentations Status: Published Year Published: 2016 Citation: Bough, R. A., Holm, D. G., Jayanty, S. S. 2016. Flavor profiling of potato clones using HS-SPME/GCMS and sensory analysis to establish a germplasm screening method for flavor improvement. Am. J. Potato Res. 93:123. (Abstract).
• Type: Other Status: Published Year Published: 2016 Citation: Miller, J. C., Jr., Koym, J. W., and Scheuring, D. C. 2016. Southwest Regional Potato Variety Trial Report 2015. Texas A&M AgriLife Research, College Station and Lubbock. 22pp.
• Type: Other Status: Published Year Published: 2016 Citation: Miller, J. C., Jr., Koym, J. W., and Scheuring, D. C. 2016. Western Regional Red/Specialty Variety Trial Report 2015. Texas A&M AgriLife Research, College Station and Lubbock. 26pp.
• Type: Other Status: Published Year Published: 2016 Citation: Miller, C., Koym, J., and D. Scheuring. 2016. 2016 Field Day Handbook. July 21, 2016. Texas Potato Variety Development Program. Texas A&M AgriLife Research, College Station and Lubbock. 35pp.
• Type: Conference Papers and Presentations Status: Published Year Published: 2016 Citation: Miller, C. 2016. Reveille Russet: A high yielding fresh-market russet with wide adaptability. Potato Expo 2016 Program Directory, Las Vegas, NV. p. 26. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2016 Citation: Chaparro, J., Holm, D. G., Broeckling, C. D., Prenni, J. E., Heuberger, A. L. 2016. Application of non-targeted metabolomics to cooked and raw potato tuber: implications to breeding for health traits. Am. J. Potato Res. 93:126. (Abstract).
• Type: Conference Papers and Presentations Status: Published Year Published: 2016 Citation: Thompson, A. L, Douches, D., Endelman, J. B., Bethke, P. C., Haynes, K., Holm, D. G., DeJong, W., Miller, J. C., Jr., Novy, R. G., Porter, G., Sathuvalli, V. R., and Yencho, C. 2016. Successes in traditional breeding programs. Am. J. Potato Res. 93:144. (Abstract).
• Type: Journal Articles Status: Under Review Year Published: 2016 Citation: Nzaramba, M. N., Scheuring, D. C., Bamberg, J. B., Senseman, S. A., and Miller, J. C., Jr. 2016. Total glycoalkaloids, antioxidant activity, and phenolic levels in Solanum microdontum and Solanum jamesii accessions. Amer. J. Potato Res. 93: (Under Review).
• Type: Journal Articles Status: Under Review Year Published: 2016 Citation: Endelman, J. B., Schmitz, C. A., Douches, D. S., Coombs, J. J. Coombs, Bizimngu, B., DeJong, W. S., Haynes, K. G., Holm, D. G., Miller, J. C., Jr., Navarro, F. M., Novy, R. G., Palta, J. P., Porter, G. A., Sathuvalli, V. R., Thompson, A. L., and Yencho, G. C. 2016. Pedigree reconstruction with genome-wide markers in potato. Amer. J. Potato Res. 93: (Under Review).
• Type: Other Status: Published Year Published: 2016 Citation: Miller, C., Koym, J., and Scheuring, D. 2016. Texas Potato Breeding Report, 2015. Texas A&M AgriLife Research, College Station and Lubbock. 342pp.