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由大豆疫霉菌引起的大豆疫霉根腐病是严重影响大豆生产的毁灭性病害之一。防治该病经济有效的方法是抗病育种,而抗性资源筛选又是抗病育种的基础。采用下胚轴伤口接种法,用黑龙江省大豆疫霉菌的1号优势生理小种对来自黑龙江、吉林、河南、内蒙古、辽宁、湖北、四川、河北、陕西、中国农业科学院的536份栽培大豆材料(其中农家品种280份、其它大豆品种256份)进行抗性鉴定,抗病的152份,占28.3%,中间类型的135份,占25.2%,感病的249份,占46.5%。280份农家品种中,抗病的有89份,占农家品种的32%,这说明农家大豆品种资源抗性比例较高。种皮色或种脐色为黄色或褐色的材料中抗性种质较多。
Phytophthora sojae caused by Phytophthora sojae is one of the devastating diseases that seriously affect soybean production. A cost-effective way to prevent and treat the disease is to fight disease-resistant breeding, and screening of resistant resources is the foundation of disease-resistant breeding. Hypocotyl wound inoculation method was used to investigate the effects of soybean inoculation on the growth of 536 cultivated soybean materials from Heilongjiang, Jilin, Henan, Inner Mongolia, Liaoning, Hubei, Sichuan, Hebei, Shaanxi and Chinese Academy of Agricultural Sciences (Including 280 cultivars of farmland and 256 of other soybean cultivars), 152 were disease resistant, accounting for 28.3%, 135 were intermediate, accounting for 25.2% and susceptible were 249 (46.5%). Of the 280 farmland cultivars, 89 were resistant to disease, accounting for 32% of the farmhouse cultivars, indicating that the proportion of farmhouse soybean cultivars is relatively high. Seed coat color or species of umbilical yellow or brown material resistant to more germplasm.