四川省油菜区试材料对根肿病抗性差异研究

Screening for resistance of oilseed rape to Plasmodiophora brassicae

在自然发病条件下,对四川新育成油菜材料进行了根肿病抗性评价。根据发病严重度将70个油菜新材料分为高抗、中抗、低抗/低感、中感、高感5个类型,其中,大部分新育成油菜材料为根肿病感病材料,40号和24号材料发病指数大于50,为高感材料;70号材料发病指数为2.67,为高抗材料,可用于进一步选育研究。

The resistance of 70 new oilseed materials to Plasmodiophora brassicae, under natural conditions in the field in Chengdu, was evaluated. According to the severity of disease, 70 new oilseed materials were divided into five types, such as high resistance, medium resistance and low resistance / low susceptible, medium susceptible, high susceptible. The lines 40 and 24, with a high incidence index over 50, belonged to high susceptible material. In contrast, the line 70, with a low incidence index only 2.67, belonged to high resistance material and could be used for further study on resistant breeding.