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研究大豆疫霉菌生理小种、大豆种质资源的抗病性和耐病性,旨在为有效的病害防治奠定基础。对来源于黑龙江省5个县(市)和1个国营农场的18个大豆疫霉菌分离物进行生理小种鉴定,共鉴别出5个大豆疫霉菌生理小种,其中两个小种的毒力公式分别为7和6,7,与国际上已报道的1号和13号小种相同,另外3个小种为未报道的新小种,1号小种为佳木斯优势生理小种。在145份黑龙江省大豆种质中,有10个选育品种、6个地方品种和19个育成品系抗1号小种,占鉴定资源的24.14%,其中地方品种中抗病材料仅为10.00%,这表明黑龙江省大豆抗性资源相对较少。在鉴定的选育品种和地方品种中未发现高耐品种。
To study the disease resistance and disease resistance of Phytophthora sojae races and soybean germplasm resources and to lay the foundation for effective disease control. Fifteen isolates of Phytophthora sojae from five counties (cities) and one state-owned farm in Heilongjiang Province were identified for physical races, and five physiological races of Phytophthora sojae were identified. Among them, the virulence of two races The formulas were 7 and 6, respectively, which were the same as those reported in the world. The other three races were unreported new races. The first racial races were Jiamusi superior race. Among 145 soybean germplasms in Heilongjiang province, 10 breeding varieties, 6 local varieties and 19 breeding strains were resistant to race 1, accounting for 24.14% of the identified resources, of which the resistant varieties in local varieties were only 10.00% , Which indicates that there is relatively less soybean resistant resources in Heilongjiang Province. High-resistant varieties were not found in the identified varieties and landraces.