期刊
CROP BREEDING AND APPLIED BIOTECHNOLOGY
卷 15, 期 3, 页码 132-138出版社
BRAZILIAN SOC PLANT BREEDING
DOI: 10.1590/1984-70332015v15n3a24
关键词
Breeding; Glycine max; CPMMV; virus tolerance; tolerance gene
资金
- CNPq
Soybean stem necrosis is caused by Cowpea mild mottle virus (CPMMV) and it has been recognized as an emerging and economically important disease in Brazil. No resistant, but only tolerant cultivars have been identified so far, and their genetic control is still unknown. To investigate the inheritance of soybean tolerance to CPMMV, two crosses between tolerant cultivars (BRS 133 x BRSMT Pintado), and between a susceptible (CD 206) and a tolerant cultivar (BRSMT Pintado) were carried out to obtain F-2 and F-2:3 generations. Quantitative and qualitative analyses applied to the data from greenhouse evaluations showed that there are at least two distinct major genes determining tolerance to CPMMV, one in the soybean cultivar BRS 133 and another in the cultivar BRSMT Pintado, with predominance of additive genetic effects and heritability levels that allow for efficient selection based on early generation means.
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