Submitted to: American Peanut Research and Education Society Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2008
Publication Date: 1/15/2009
Citation: Holbrook Jr, C.C., Culbreath, A.K., Brenneman, T.B., Dong, W.B., Timper, P., Kvien, C.K. 2009. Multiple disease reistances in a medium-maturity peanut cultivar. In: Proceedings of American Peanut Research and Education Society, July 15-18, 2008, Oklahoma City, Oklahoma. p. 36. Interpretive Summary: not required
Technical Abstract: Several diseases limit peanut (Arachis hypogaea) production in the southeastern U.S. Runner-type peanut cultivars with multiple disease resistances have been developed; however, these cultivars have optimal maturity that is 2 to 3 weeks later than standard runner-type cultivars. Most growers prefer medium-maturing cultivars, and the late maturity of these disease resistant cultivars has limited their usefulness. There is a need for multiple disease resistant cultivars with medium maturity. ‘Tifguard’ was developed and released as a peanut cultivar with resistance to both the peanut root-knot nematode and tomato spotted wilt virus. We have been evaluating this medium-maturity cultivar for the past 2 years for resistance to other diseases. Field and greenhouse studies have indicated a level of resistance to Cylindrocladium Black Rot (CBR) similar to ‘GA-02C’. Field studies have also revealed a significant level of resistance to late leaf spot (Cercosporidium personatum). We anticipate that the medium maturity of this cultivar will provide growers with more flexibility in utilizing this cultivar in their disease control program.