Publication Date
1993
Description
ABSTRACT Breeding alfalfa (Medicago saliva L.) for resistance to Sclerotinia crown and stem rot (SCR; causal agent Sclerotitivia trifoliorum Eriks.), which is a serious disease in Japan, was started in 1983. Increased resistance to this disease has been examined after repeated selected of surviving plants from artificially inoculated field plots to the 5th generation. The strains selected for SCR resistance showed higher resistance than Tachiwakaba, which was the main breeding material. The effectiveness of selection judged by the survival rate of progenies was low in the early selection generations but high in the later ones, It is considered that the selection effect for SCR resistance becomes higher in the later generations, probably because of accumulation of resistant genes.
Citation
Kanbe, M; Fujimoto, F; and Inami, S, "Increased Resistance to Sclerotinia Crown and Stem Rot of Alfalfa through Recurrent Selection of Surviving Plants in Inoculated Field Plots" (2024). IGC Proceedings (1993-2023). 9.
https://uknowledge.uky.edu/igc/1993/session22/9
Included in
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Increased Resistance to Sclerotinia Crown and Stem Rot of Alfalfa through Recurrent Selection of Surviving Plants in Inoculated Field Plots
ABSTRACT Breeding alfalfa (Medicago saliva L.) for resistance to Sclerotinia crown and stem rot (SCR; causal agent Sclerotitivia trifoliorum Eriks.), which is a serious disease in Japan, was started in 1983. Increased resistance to this disease has been examined after repeated selected of surviving plants from artificially inoculated field plots to the 5th generation. The strains selected for SCR resistance showed higher resistance than Tachiwakaba, which was the main breeding material. The effectiveness of selection judged by the survival rate of progenies was low in the early selection generations but high in the later ones, It is considered that the selection effect for SCR resistance becomes higher in the later generations, probably because of accumulation of resistant genes.
