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Submitted to: Peanut Research at Oklahoma State University
Publication Type: Experiment Station Publication Acceptance Date: 2/15/2017 Publication Date: 3/1/2017 Citation: Bennett, R.S., Chamberlin, K.D. 2017. Disease evaluations and agronomic traits of advanced peanut breeding lines in 2016. In: Partners and Progress - Peanut Research at OSU, 2016. Oklahoma Agricultural Experiment Station, P-1049. p. 15-20. Interpretive Summary: The development of new high-oleic peanut cultivars with improved yield, disease resistance, and seed characteristics is essential to the sustainability of the peanut industry in the Southwest. In 2016, advanced breeding lines of runner, Spanish, and Virginia peanuts and commercial cultivars were evaluated in small plots at Fort Cobb, OK, for yield, and seed quality and traits. Environmental conditions in 2016 were moderately favorable for Sclerotinia blight. Little southern blight and pod rot were observed. Of the 12 runner entries evaluated, the top four runner entries for revenue ($716-687/A) were ARSOK-R47A, ARSOK-R37, Lariat, and ARSOK-R58B. The highest-yielding entries were ARSOK-R37, ARSOK-R47A, and Lariat, which produced 5941, 5858, and 5797 lbs/A, respectively. Tamrun OL11 was the highest-grading entry at 70% TSMK, followed by ARSOK-47A (69), Red River Runner (68), and ARSOK-R37 (68). The most Sclerotinia-resistant entries were ARSOK breeding lines R60A, R58B, and R58C, with less than 10% disease. Florida 07 was the most susceptible entry at 55%. No significant differences were observed between the two Spanish entries, OLé and ARSOK-S88-1, in crop value, yield, shelling characteristics, or resistance to Sclerotinia blight. Mean yield and grade for OLé were 5048 lbs/A and 65% TSMK, respectively. ARSOK-S88-1 produced 4852 lbs/A and an average grade of 65% TSMK. The seven Virginia entries differed in crop value, yield, and grade. The breeding line ARSOK-V85-7 ($699/A) had the highest crop value, and Wynne ($472/A) had the lowest crop value. All entries were similar in yield except Wynne, which had the lowest yield at 4175 lbs/A. ARSOK-V85-7 (74% TSMK) had the highest grade; Florida Fancy and VENUS (62 and 61% TSMK, respectively) had the lowest grades. Less Sclerotinia blight was found in ARSOK-V31 and Venus (13 and 14% diseased, respectively) than ARSOK-V41 (52%). These results demonstrate ongoing progress in breeding improved peanut cultivars. Technical Abstract: Peanut disease evaluations of advanced breeding lines are conducted annually to compare the agronomic traits (crop value, yield, seed grade, and characteristics) and disease resistance of cultivars that are currently available or close to being released for the Southwest. In 2016, a total of 21 commercially available peanut cultivars and high-oleic advanced breeding lines were evaluated in small field plots in Fort Cobb, OK. Environmental conditions in 2016 were moderately favorable for Sclerotinia blight. Little southern blight and pod rot were observed. Of the 12 runner entries evaluated, the top four runner entries for revenue ($716-687/A) were ARSOK-R47A, ARSOK-R37, Lariat, and ARSOK-R58B. The highest-yielding entries were ARSOK-R37, ARSOK-R47A, and Lariat, which produced 5941, 5858, and 5797 lbs/A, respectively. Tamrun OL11 was the highest-grading entry at 70% TSMK, followed by ARSOK-47A (69), Red River Runner (68), and ARSOK-R37 (68). The most Sclerotinia-resistant entries were ARSOK breeding lines R60A, R58B, and R58C, with less than 10% disease incidence. Florida 07 was the most susceptible entry at 55%. No significant differences were observed between the two Spanish entries, OLé and ARSOK-S88-1, in crop value, yield, shelling characteristics, or resistance to Sclerotinia blight. Mean yield and grade for OLé were 5048 lbs/A and 65% TSMK, respectively. ARSOK-S88-1 produced 4852 lbs/A and an average grade of 65% TSMK. The seven Virginia entries differed statistically in crop value, yield, and grade. The breeding line ARSOK-V85-7 ($699/A) had the highest numerical crop value, and Wynne ($472/A) had the lowest crop value. All entries were statistically similar in yield except Wynne, which had the lowest yield at 4175 lbs/A. Numerically, ARSOK-V85-7 (74% TSMK) had the highest grade. Florida Fancy and VENUS (62 and 61% TSMK, respectively) had the lowest grades. Less Sclerotinia blight was found in ARSOK-V31 and Venus (13 and 14%, respectively) than ARSOK-V41 (52%). These results demonstrate ongoing progress in breeding improved peanut cultivars. |
