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籼稻品种窄叶青8号含未知的稻瘟病抗性基因,在北方稻区的稻瘟病抗性育种上有利用价值。应用来自窄叶青8号和粳稻品种京系17的DH群体建立抗病池和感病池,通过对两池的RAPD分析,发现与稻瘟病抗性共分离的分子标记。进一步用用个独立的分离群体将窄叶青8号的抗性基因和分子标记定位在第8染色体上,该基因称为Pi-zh。
Indica rice variety ZYY 8 has unknown rice blast resistance gene, which is valuable for rice blast resistance breeding in the northern rice area. An anti-disease pool and a susceptible pool were established using the DH population from the Zayevqing 8 and the japonica rice Jing-17, and molecular markers co-segregating with the blast resistance were found by RAPD analysis of the two pools. Further, using a separate segregation group, the resistance gene and molecular marker of ZYY8 was mapped on chromosome 8, which is called Pi-zh.