论文部分内容阅读
1983～1985年用多菌系混合接种鉴定了5千多个品种,从中选出具有不同抗性水平的品种30多个。通过多次连续接种比较,最后筛选出12个作为鉴别品种。即二翻早、梭米草、绥阳谷、大白谷、小黄谷、有芒大头白壳晚米、大杯子谷、大白糯、K46、MRC1239、育401、桂朝2号。1985～1988年用来自贵州41个县(市)的169个水稻纹枯病单菌核分离菌接种在12个鉴别品种上,按接种后的反应分成3组13个不同菌系群。即ThA、B、C、D,TkA、B、C、D,MhA、B、C、D、E。其中ThA、B、C类群是贵州的主要茵系。另外,对病菌分离菌株的培养性状也进行了研究。
From 1983 to 1985, more than 5,000 varieties were identified by multi-bacterial mixed inoculation, and more than 30 varieties with different resistance levels were selected. Through repeated serial inoculation comparison, 12 were finally selected as identification varieties. That is, the second turn early, the shuttle grass, Suiyang Valley, Valley, Valley, there are Mount White shell late rice, cup Valley, Da Bai Nuo, K46, MRC1239, education 401, Gui Chao 2. From 1985 to 1988, 169 Rhizoctonia cerealis isolates from 41 counties in Guizhou were inoculated on 12 cultivars and divided into 3 groups of 13 different strains according to the response after inoculation. Ie ThA, B, C, D, TkA, B, C, D, MhA, B, C, D, E. Among them, ThA, B and C groups are the main lines of Guizhou. In addition, the culture of bacteria isolates was also studied.