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Disease evaluations and agronomic traits of advanced peanut breeding lines in 2012

Permanent URL:
http://handle.nal.usda.gov/10113/58231
Abstract:
A total of 38 peanut cultivars and high-oleic advanced breeding lines were evaluated in small field plots in 2012 for yield, seed grade and size, and resistance to Sclerotinia minor and Sclerotium rolfsii. Among the 14 Spanish entries, the cultivar Tamnut 06 (3258 lbs/acre) and breeding line 140-1OL (3477 lbs/A) had the highest yield. Tamnut 06 and 140-1OL, in addition to Tamspan 90, also had significantly larger seeds than the other Spanish entries. Among the 16 runner entries, Red River Runner had the highest yield (4501 lbs/A) and grade (72), and large seeds (66 g per 100 seeds). Yields from Tamrun 96 (4339 lbs/A) and the breeding line KC47 (4162 lbs/A) were similar to that of Red River Runner. The breeding lines KC37 and KC35 were similar to Red River Runner in seed grade and size, but their yields were significantly lower than that of Red River Runner. Among the eight Virginia entries, the breeding line KC11 had the highest yield (4888 lbs/A), followed by KC12 (4258 lbs/A), but these lines were among the smallest in seed size. Conversely, the largest seeds were found in KC31 and KC30A (94 and 93 g per 100 seeds, respectively), breeding lines which also had the lowest yields. Environmental conditions were unfavorable for Sclerotinia and southern blights, and no significant differences in disease incidences were observed among the Spanish, runner, and Virginia peanut entries. These results indicate significant progress in breeding peanut cultivars that surpass the agronomic qualities of currently available cultivars.
Author(s):
Rebecca S. Bennett , Kelly D. Chamberlin
Subject(s):
Corticium rolfsii , Sclerotinia minor , agronomic traits , blight , breeding , breeding lines , crop yield , cultivars , disease incidence , disease resistance , environmental factors , peanuts , seed quality , seeds , Virginia
Source:
Partners in Progress – Peanut Research at Oklahoma State University 2013 3 14
Language:
English
Year:
2013
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.