|STEVENS, JR, T|
Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 9/30/1997
Publication Date: N/A
Interpretive Summary: Germplasm Registration Article
Technical Abstract: Southwest Runner is a runner market-type peanut with moderate resistance to sclerotinia blight. Evaluated experimentally as OK CF83-126, this cultivar traces to a late generation (F9) single plant selection made in 1983 at the Caddo Research Station, Ft. Cobb, OK. The original cross between the spanish cultivar Comet and the runner cultivar Florunner was made in 1973 using Florunner as the pollen donor. Southwest Runner was initially selected to meet an interest expressed by peanut processors in a runner cultivar with a slightly smaller, more uniform sized seed. Replicated testing of OK CF83-126 began in 1986; however, its resistance to sclerotinia blight was first noted in the 1990 sclerotinia blight screening nurseries on the Caddo Research Station. From 1991 through 1993, OK CF83- 126 was compared with check cultivars in test areas having either a high or low incidence of sclerotinia blight. In total, 33 replicated trials were conducted in Oklahoma comparing OK CF83-126 with one or more of the check cultivars, Florunner, Okrun, Tamrun 88, and Tamspan 90. Southwest Runner equaled the checks in yield, grade, and value per acre when grown in areas free or having low levels of Sclerotinia blight. However, in areas having a high incidence of sclerotinia blight, Southwest Runner was superior to the three runner cultivars and was essentially equivalent to sclerotinia blight-resistant Tamspan 90. Limited chemical and flavor testing detected no appreciable differences between Southwest Runner, Okrun, and Florunner. The OAES and the USDA-ARS are retaining ownership of Southwest Runner which is being placed under Plant Variety Protection and is to be sold by variety name only as a class of certified seed. Breeder seed will be maintained by the OAES.