Submitted to: American Peanut Research and Education Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: June 13, 2006
Publication Date: July 11, 2006
Citation: Chenault, K.D., Tillman, B.L., Melouk, H.A. 2006. Tracking the inheritance of a molecular marker associated with resistance to Sclerotinia blight in peanut [abstract]. In: 2006 Proceedings of the American Peanut Research and Education Society, July 11-14, 2006, Savannah, Georgia. 38:56. Available: http://www.apres.okstate.edu/Vol%2038%20Proc.pdf. Technical Abstract: The production of cultivated peanut, an important agronomic crop throughout the United States and the world, is consistently threatened by various diseases and pests. Although information on the variability of morphological traits associated with disease resistance is available in the literature, few molecular markers associated with such resistance have been reported. The identification of such markers would greatly assist peanut geneticists in selecting genotypes to be used in breeding programs. Using simple sequence repeat (SSR) primers reported for peanut, we previously identified a molecular marker associated with resistance to the fungus Sclerotina minor, the causal agent of Sclerotinia blight. The objectives of this study were to examine F1 populations for the inheritance of the molecular marker and to determine if the presence of the marker correlates with resistance to S. minor via greenhouse testing. Preliminary results obtained from testing the F1 populations indicate that the inheritance of the molecular marker is linked to Sclerotinia blight resistance. Future use of this marker to screen segregating populations and/or germplasm collections will greatly enhance the efficiency of breeding peanut with resistance to Sclerotinia blight.