大豆品种(系)对不同疫霉菌生理小种的抗性研究

Resistance Research of Soybean Cultivars (Lines) against Different Phytophtora sojae Spices

对分布于黑龙江省各地区的60个大豆疫霉病菌株进行鉴定,初步鉴定为7个生理小种,选取黑龙江省优势小种1号、3号、9号为病原对208个国内外大豆品种(系)的抗性水平进行鉴定,以期获得抗疫霉根腐病的品种和种质资源。结果表明:208个大豆品种(系)中抗病品种比例较大,东北地区的大豆品种对疫霉根腐病1号、3号小种的抗性明显优于国外品种,而对9号生理小种则感病品种数量多于国外品种。

Selecting and using resistance cultivars is the most cost-effective way to control soybean Phytophtora sojae root rot disease.This research identified 60 Phytohptora sojae strains from Heilongjiang province and they were identified into 7 races.The most popular 3 from 7 races were used to measured the resistance level of 208 domestic and abroad soybean cultivars,so as to select valuable resistant soybean germplasm.The result showed that among 208 soybean cultivars（lines）,the resistant ones took up major part,and the soybean cultivars from Northeast of China had better resistance to race 1 and race 3 than foreign cultivars,while there were more domestic cultivars susceptible to race 9 compared to foreign cultivars.