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ARS Home » Plains Area » El Reno, Oklahoma » Oklahoma and Central Plains Agricultural Research Center » Peanut and Small Grains Research Unit » Research » Publications at this Location » Publication #364095
Research Project: Genetic Improvement of Peanut for Production in the Southwest United States Region

Location: Peanut and Small Grains Research Unit

Title: Disease evaluations and agronomic traits of advanced peanut breeding lines in 2018

Author
item Bennett, Rebecca
item Chamberlin, Kelly

Submitted to: Peanut Research at Oklahoma State University
Publication Type: Experiment Station
Publication Acceptance Date: 2/26/2019
Publication Date: 3/1/2019
Citation: Bennett, R.S., Chamberlin, K.D. 2019. Disease evaluations and agronomic traits of advanced peanut breeding lines in 2018. In: Partners and Progress - Peanut Research at OSU, 2018. Oklahoma Agricultural Experiment Station. P-1056, p. 28-36.

Interpretive Summary: Sustainability of the Southwest peanut industry depends on the continuous improvement of locally adapted cultivars. Peanut cultivars developed in other production areas may also be grown successfully in the Southwest, but their susceptibility to local diseases is often unknown. Therefore, disease evaluations of advanced peanut breeding lines are conducted annually to compare agronomic traits (crop value, yield, seed grade and characteristics) and disease resistance to cultivars that are currently available or close to being released for the Southwest. In 2018, a total of 32 commercially available peanut cultivars and high-oleic advanced breeding lines were evaluated in small field plots in Fort Cobb, OK. Environmental conditions in 2018 were favorable for Sclerotinia blight, but relatively little southern blight and pod rot were observed. Of the 12 runner entries evaluated, the three highest for yield and crop value were ARSOK-R47A ($1,070 per acre; 6,595 pounds per acre), Georgia-09B ($1,005 per acre; 6,002 pounds per acre), and Webb ($944 per acre; 5,723 pounds per acre). ARSOK-R96-3 and Lariat had the least Sclerotinia blight at 13 and 32 percent, respectively, and Florida-07 had the most at 85 percent. Of the five Spanish entries tested, ARSOK-S96-5 and Span-17 had the highest crop values and highest grades ($901 and $898 per acre, and 74 and 73 percent, respectively). The Virginia trial included 15 lines, and the top three entries for crop value and yield were ARSOK-V85-7 ($1,053 per acre; 5,554 pounds per acre), NC17EX ($1,006 per acre; 5,554 pounds per acre), and the newly released Contender ($997 per acre; 5,493 pounds per acre). These results demonstrate ongoing progress in breeding improved peanut cultivars.

Technical Abstract: Sustainability of the Southwest peanut industry depends on the continuous improvement of locally adapted cultivars. Peanut cultivars developed in other production areas may also be grown successfully in the Southwest, but their susceptibility to local diseases is often unknown. Therefore, disease evaluations of advanced peanut breeding lines are conducted annually to compare the agronomic traits (crop value, yield, seed grade, and characteristics) and disease resistance to cultivars that are currently available or close to being released for the Southwest. In 2018, a total of 32 commercial cultivars and high-oleic advanced breeding lines were evaluated in small field plots in Fort Cobb, OK. Environmental conditions in 2018 were favorable for Sclerotinia blight, but relatively little southern blight and pod rot were observed. Of the 12 runner lines evaluated, the three highest entries for yield and crop value were breeding line ARSOK-R47A ($1,070 per acre; 6,595 pounds per acre), Georgia-09B ($1,005 per acre; 6,002 pounds per acre), and Webb ($944 per acre; 5,723 pounds per acre). ARSOK-R90-12 had the highest grade at 75 percent. ARSOK-R96-3 and Lariat had the least Sclerotinia blight at 13 and 32 percent, respectively, and Florida-07 had the most at 85 percent. For the five Spanish entries, ARSOK-S96-5 and Span-17 had the highest numerical crop values and significantly higher grades than other Spanish entries ($901 and $898 per acre, and 74 and 73 percent, respectively). In the Virginia trial with 15 entries, the top three for crop value and yield were ARSOK-V85-7 ($1,053 per acre; 5,554 pounds per acre), NC17EX ($1,006 per acre; 5,554 pounds per acre), and Contender ($997 per acre; 5,493 pounds per acre). ARSOK-V85-7 had the highest grade at 76 percent. The entry with the most resistance to Sclerotinia blight was Venus (32 percent). These results demonstrate ongoing progress in breeding improved peanut cultivars.