【摘要】 本文首次报道用来自我国10个省市(区)水稻的52个稻瘟病菌株与国际水稻所提供的4个标准菌株进行杂交,在培养基上形成了有性世代(产生子囊壳)。有性世代形成能力于菌株之间有很大差异,而了囊壳的产生和数量与配对标准菌株的交配型有关。同时还发现,供试菌株中存在着两种交配型(即A和a),但极大多数的菌株为交配型A,仅其中1个来自云南的菌株为交配型a。更多还原

【Abstract】 The present paper is the first report that 4 standard isolates from IRRI and 52 isolates from nine provinces and one city in China were cocultivated on oatmeal agar to produce mature perithecia. The formative fertility of the perfect stage of P. oryzae differed greatly among isolates The amount of perithecium production in P. oryzae was related to the mating type of standard isolates. Isolates from rice belonged to two compatibility groups, designated as A and a. but most of them belonged to group A except isolate Yu54 from Yunan province to group a. Isolates 1096, 1347, 1316, 57 etc. exhibited intergroup fertility. The availability of the perfect stage in P. oryzae has made it possible for genetic analysis of virulence.更多还原