Analysis of Genes Resistance to Phytophthora Root Rot in Soybean Germplasm Imported from America
Phytophthora root rot caused by Phytophthora sojae is a major constraint in soybean production in China. Breeding resistant cultivars is a most effective and economical method for the disease control. In this study, 85 soybean cultivars (lines) from America were inoculated with 13 strains of P. Sojae using the hypocotyl inoculation technique and identified the reactions. The results showed that 72 cultivars (lines) were resistant to one or more P. Sojae strains. Comparisons of reaction types of differential soybean cultivars (lines) and pedigree analyses allowed postulation of genes or combinations of genes for Rpsla, Rpslc, Rps1k, Rps2, Rps3c, Rps4, Rps5, Rps6, and Rps7 in 35 cultivars or lines. Of the 35 cultivars or lines, 14 carrying Rpsla, one carrying Rpslc and two carrying Rpslk could be used as resistant parents in soybean breeding programs.
国家科技期刊平台
NSTL
万方数据
维普
