Author
|
Submitted to: Peanut Research at Oklahoma State University
Publication Type: Experiment Station Publication Acceptance Date: 2/15/2016 Publication Date: 3/1/2016 Citation: Bennett, R.S., Chamberlin, K.D. 2016. Disease evaluations and agronomic traits of advanced peanut breeding lines in 2015. In: Partners in Progress – Peanut Research at Oklahoma State University, 2015. Oklahoma Agricultural Experiment Station. P-1047. p. 13-18. 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 2015, 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 2015 were not favorable for Sclerotinia blight, southern blight, or pod rot, and no differences in disease resistance were observed among the entries. Of the 12 runner entries evaluated, Red River Runner, ARSOK-R37, ARSOK-R47A, and Tamrun OL11 produced the highest-value crops at $706-$747/acre. The highest-yielding entries, producing 4622-4683 lbs/acre, were the cultivar Red River Runner and the ARSOK breeding lines R37 and R47A. The two Spanish entries, OLé and ARSOK-S88, were similar in crop value, yield, and shelling characteristics. OLé produced 3267 lbs/acre and 69% TSMK; ARSOK-S88 produced 3182 lbs/acre and an average grade of 71% TSMK. The six Virginia entries differed in crop value, yield, and grade. The breeding line ARSOK-V41 ($771/acre) had the highest crop value, and the best yields were obtained from ARSOK-V41 (4804 lbs/acre) and Florida Fancy (4477 lbs/acre). ARSOK entries V31 and V85 had the best grades (74% TSMK), but both were similar to V41 (73% TSMK). These results demonstrate ongoing progress in breeding peanut cultivars that surpass the agronomic qualities and disease resistance of currently available cultivars. Technical Abstract: A total of 20 commercially available peanut cultivars and high-oleic advanced breeding lines were evaluated in small field plots in 2015 for agronomic traits (crop value, yield, seed grade, and characteristics). Environmental conditions in 2015 were not favorable for Sclerotinia blight, southern blight, or pod rot, and no differences among entries were observed for disease resistance. Of the 12 runner entries evaluated, the top four entries for revenue ($706-$747/acre) were Red River Runner, ARSOK-R37, ARSOK-R47A, and Tamrun OL11. The highest-yielding entries (4622-4683 lbs/acre) numerically, were Red River Runner and ARSOK breeding lines R37 and R47A. Tamrun OL11 was the highest-grading entry with 76% TSMK. No significant differences were observed between the two Spanish entries, OLé and ARSOK-S88, in crop value, yield, and shelling characteristics. Mean yield and grade for OLé were 3267 lbs/acre and 69% TSMK, respectively. ARSOK-S88 produced 3182 lbs/acre and an average grade of 71% TSMK. The six Virginia entries differed statistically in crop value, yield, and grade. The breeding line ARSOK-V41 ($771/acre) had the highest crop value, and the best yields were obtained from ARSOK-V41 (4804 lbs/acre) and Florida Fancy (4477 lbs/acre). ARSOK entries V31 and V85 had the best grades (74% TSMK), but neither were statistically different from V41 (73% TSMK). These results demonstrate ongoing progress in breeding peanut cultivars that surpass the agronomic qualities and disease resistance of currently available cultivars. |
