Submitted to: American Peanut Research and Education Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2006
Publication Date: 12/20/2006
Citation: Holbrook Jr, C.C., Timper, P., Dong, W.B., Kvien, C.K., Culbreath, A.K. 2006. Development of high yielding, TSWV resistant isolines with and without resistance to the peanut root-knot nematode. Proc. Amer. Peanut Res. and Educ. Soc. 38:25.
Interpretive Summary: not required
Technical Abstract: Peanut cultivars are available that have high resistance to the peanut root-knot nematode (Meloidogyne arenaria) or Tomato spotted wilt virus (TSWV), however, no cultivars exist that have resistance to both pathogens. The objective of this research was to combine resistance to both pathogens in a single genotype. During the course of this research we also had the opportunity to develop isolines with and without nematode resistance. Breeding populations were developed by hybridizing the TSWV resistant cultivar, C-99R with the nematode resistant cultivar, COAN. Selection for nematode resistance was conducted using standard greenhouse screening techniques. Selection for TSWV resistance was conducted in the field with natural virus infection. Breeding lines were selected that had high resistance to both pathogens. Isolines for resistance to the peanut root-knot nematode were also developed. Subsequent studies have identified one breeding line that is being considered for release as a cultivar with resistance to both pathogens. The isolines are available to the research community, and should be valuable experimental tools to answer important questions in peanut research.