Location: Peanut and Small Grains Research UnitTitle: Disease evaluations and agronomic traits of advanced peanut breeding lines in 2019
Submitted to: Peanut Research at Oklahoma State University
Publication Type: Experiment Station
Publication Acceptance Date: 2/15/2020
Publication Date: 3/1/2020
Citation: Bennett, R., Chamberlin, K.D. 2020. Disease evaluations and agronomic traits of advanced peanut breeding lines in 2019. In: Partners and Progress - Peanut Research at OSU, 2019. Oklahoma Agricultural Experiment Station. P-1059, p. 27-34.
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 2019, a total of 35 commercial cultivars and high-oleic advanced breeding lines were evaluated in small field plots in Fort Cobb, OK. Due to above-average fall temperatures and an early freeze, environmental conditions in 2019 were unfavorable for Sclerotinia blight. Moderate levels of pod rot were observed in Virginia entries. Of the 13 runner lines evaluated, the three numerically highest entries for crop value, a composite measure of yield and seed grade, were Lariat ($649 per acre) and breeding lines ARSOK-R94-4A ($640 per acre), and ARSOK-R91-2 ($633 per acre). For the Spanish entries, ARSOK-S88-2 and Schubert had the highest crop values at $500 and $496 per acre, respectively. The Valencia entries yielded less than the Spanish entries, but had higher crop values due to higher contract prices. In the Virginia trial with 14 entries, the top three for crop value and yield were NC17EX ($659 per acre; 3,836 pounds per acre), Jupiter ($600 per acre; 3,848 pounds per acre), and ACI 351 ($587 per acre; 3,521 pounds per acre). Jupiter had the most pod rot (43%); NC1EX, NC2EX, and NC17EX had significantly less pod rot than Jupiter. These results demonstrate ongoing progress in breeding improved peanut cultivars.