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分析了云南水稻品种堆金子、扎昌龙、毫糯扬和干炸谷对白叶枯病菌系Px061抗性的遗传模式和等位关系,鉴定了这4个品种所带抗病基因与部分国际上命名的抗白叶枯病基因的异同。结果表明:4个品种对Px061的抗性均受1对相互独立的显性基因支配。干炸谷带有的显性抗病基因与Xa-3等位或相同。堆金子和毫糯扬带有的显性抗病基因分别与Xa-1、Xa-2、Xa-3、Xa-4、xa-5和Xa-14呈独立遗传。扎昌龙带有的显性抗病基因与Xa-4呈连锁遗传,其重组率为(13.3±4.6)%。
The genetic patterns and allelic relationships of resistance to Xanthomonas oryzae Px061 in Yunnan rice cultivars such as Heilongjiang, Zhachanglong, Milluangyang and Dry Valley were analyzed. The resistance genes of these four cultivars were identified, Similarities and Differences of the Named Bacterial Blight Resistance Genes. The results showed that the resistance of four cultivars to Px061 was dominated by a pair of independent dominant genes. Dried deep-fried Valley with the dominant resistance genes and Xa-3 allele or the same. The dominant resistance genes of HepG2 and XGN1 were independently inherited from Xa-1, Xa-2, Xa-3, Xa-4, Xa-5 and Xa-14, respectively. Zhaochanglong with dominant resistance gene was linked with Xa-4, the recombination rate was (13.3 ± 4.6)%.