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ARS Home » Research » Publications at this Location » Publication #83677
Title: RUNNER-TYPE PEANUT WITH RESISTANCE TO SCLEROTINIA MINOR JAGGER

Author
item SMITH, O - TEXAS A&M UNIV.
item SIMPSON, C - TEXAS AG. EXP. STATION
item Melouk, Hassan

Submitted to: American Peanut Research and Education Society Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 7/11/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Sclerotinia minor Jagger is the cause of significant peanut yield loss in Texas and Oklahoma. Tamspan 90 has enhanced production in disease-prone fields, but reduction in spanish peanut consumption has heightened the need for a sclerotinia blight-resistant runner cultivar. Transfer of resistance from Tamspan 90 to industry acceptable runner-type breeding lines has been a focus of the Texas peanut breeding program. Single and backcross progeny with numerous runner-type parents have been screened for disease reaction and selections made for plant type, vine size, pod shape and size, and seed shape and size. Resistance to sclerotinia blight has been combined with plant characteristics similar to commercial runner cultivars. Disease reactions among the selections vary from highly susceptible to resistance superior to that of Tamspan 90. Five breeding lines were evaluated for yield, grade, other agronomic traits, and disease reaction at multiple Texas and Oklahoma locations in 1995 and 1996. Yields of the selected line in Northern Texas and Oklahoma were markedly superior to Florunner and Okrun in the presence of the disease, and equal or better where the disease was not present. Seed increase in prospect of a cultivar release is in progress.