水稻品种抗瘟性分类研究

 经过六年研究,用7个不同群生理小种的稻瘟病菌稳定菌株将我省近千个水稻品种和杂交高代材料划分为54个品种类群。为深入开展品种抗性基因分析打下基础。同时提出30个抗多个小种的广谱抗性品种,供抗病育种使用。用7个稳定菌株以及我省各地分离的329个病菌单孢菌株,分别接种测定了我省栽培面积五万亩以上的32个水稻品种的抗瘟性,以判别我省主要栽培品种的抗瘟性水平,直接服务于生产。

Studies on the classification of Rice Varieties for Blast Resistance

In the last six years, nearly 1000 rice varieties and advanced lines of crosses in yunnan province were divided into 54 groups on the basis of the reaction to the stabile isolates of 7 physiological races groups of Pyricularia oryzae, and providing for the basis of further studies on the gene analyses of varieties resistance to blast. Furthermore, 30 varieties with broad spectrum of resistance to several races have been selected to breed for blast resistance.