Genetic Analysis of Resistance to Soybean Mosaic Virus in Four Soybean Cultivars from China
- Y Wang,
- R. L. Nelson and
- Y. Hu
- D ep. of Crop Sciences, 1101 W. Peabody Dr., Univ. of Illinois, Urbana, IL 61801
U DA-ARS, Plant Physiology and Genetics Research Unit, Dep. of Crop Sciences, 1101 W. Peabody Dr., Univ. of Illinois, Urbana, IL 61801
S oybean Institute, Dep. of Agronomy, Nanjing Agricultural Univ., Nanjing, Jiangsu, China
Soybean mosaic virus (SMV) is one of the most common soybean viruses and can cause economic losses. The objective of this research was to determine the inheritance of resistance to SMV-G1 1n four soybean [Glycine max (L.) Merr.] cultivars from China. Each cultivar was crossed to the susceptible cultivar Williams and to lines with known sources of resistance genes to test for allelism. The crosses were evaluated in the F2 and F3 generations in the field and in the greenhouse for reaction to inoculation with SMV-G1. Results showed that each of the Chinese cultivars has a single dominant gene for resistance to SMV-G1. The resistance gene carried by ‘Feng shou huang’ (PI 458507) is at the Rsv1 locus. The resistance gene in ‘Ke feng No. 1’ (PI 556949) is at the non-Rsv1 locus in PI 486355. The resistance gene carried by ‘Da bai ma’ (PI 556948) is not at the Rsv1 locus. The resistance gene in ‘Xu dou No. 1’ (PI 556950) is at neither the Rsv1 locus nor the non-Rsv1 locus in PI 486355.
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