Genetic analysis of resistance to bacterial blight, Xanthomonas oryzae pv. oryzae, in rice, Oryza sativa L.
Genetic analysis of resistance to bacterial blight, Xanthomonas oryzae pv. oryzae, in rice, Oryza sativa L.
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DOI：
10.1023/a:1004004623439
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发表时间：
2001-01-01
期刊：
影响因子：
1.9
通讯作者：
Khush, GS
中科院分区：
文献类型：
--
作者：
Kihupi, AN;Angeles, ER;Khush, GS
利用水稻白叶枯病菌菲律宾小种对40个抗病水稻品种的白叶枯病抗性遗传进行了研究。水稻（Xoo）。结果表明，所有品种都含有至少两对隐性抗病基因。其中一个基因控制对1号小种的抗性（PXO 61），而另一个基因赋予对6号小种的抗性（PXO 99）。除隐性基因外，9个品种还具有另一个显性基因，该基因也赋予对1号小种的抗性。等位性分析表明，39个品种的隐性抗病基因与xa 5等位，9个品种的显性抗病基因与Xa 4等位。品种Sada Diga对1号生理小种的抗性由隐性基因控制，不依赖于xa 5。同样，在所有品种中控制对6号小种的抗性的隐性基因与xa 13都是非等位的。这些基因与品种DV 86中鉴定的一个新的隐性基因xa-24（t）的等位关系正在研究中。
Forty resistant rice cultivars were studied for the inheritance of resistance to bacterial blight using Philippine races of Xanthomonas oryzae pv. oryzae (Xoo). Results showed that all the varieties have at least two recessive genes for resistance. One of these genes governs resistance to race 1 (PXO61) while the other gene confers resistance to race 6 (PXO99). In addition to the recessive genes, nine of the varieties possess another dominant gene which also confers resistance to race 1. Allelism tests revealed that the recessive genes governing resistance to race 1 in 39 varieties are allelic to xa5 while the dominant genes in the nine varieties are allelic to Xa4. The recessive gene conferring resistance to race 1 in cultivar Sada Diga is inherited independently of xa5. Similarly, the recessive genes governing resistance to race 6 in all the varieties are non-allelic to xa13. The allelic relationships of these genes with xa-24(t), a new recessive gene identified in cultivar DV86 which conveys resistance to race 6 are now being investigated.