论文部分内容阅读
报道了两个田间水稻稻瘟病菌菌株杂交后代在 13个已知抗性基因品种上的致病性分离及遗传学分析结果。 10 0个子囊孢子菌株中呈现显著的致病性分离 ,共出现 5 4种致病类型 ,在不同的品种上分别出现 1∶1,1∶3 ,3∶1,7∶9和 9∶7的无毒性 /毒性分离 ,表明供试菌株对不同品种的无毒性 /毒性是受不同基因控制的。遗传学分析结果表明 ,亲本菌株对品种新 2号和露明的无毒性 /毒性是受单基因控制的 ,对品种藤坂 5号、K6 0和K5 9的无毒性 /毒性是由 2个基因控制的 ,对品种爱知旭和草笛的无毒性 /毒性是由 4个基因控制的。
The pathogenicity and genetic analysis of thirteen known resistance genes were reported in hybrids of two field rice blast strains. There were 54 pathogenic isolates of 10 0 ascosporogenous isolates, with 1: 1, 1: 3, 3: 1, 7: 9 and 9: 7 The non-toxic / toxic isolates indicate that the tested strains are non-toxic / toxic to different species that are controlled by different genes. The results of the genetic analysis showed that the non-toxic / virulent strains of the parental strain on breed No. 2 and No. 2 were controlled by a single gene. The non-toxicity / toxicity to the breed Variety Fujisaka No. 5, K6 0 and K5 9 was controlled by two genes The non-toxic / toxic to Aichi Asakichi and the Sardinia are controlled by 4 genes.