太湖流域粳稻地方品种铁杆青对稻瘟病抗性的遗传分析

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稻瘟病是水稻的主要病害之一。利用经典遗传方法和分子标记研究品种的抗性遗传与定位相应的抗病基因是水稻抗稻瘟病遗传育种所需要的。本研究以抗稻瘟病品种铁杆青为抗病亲本,以普感品种苏御糯为感病亲本,构建了F_2群体,最终定位了抗稻瘟病基因Pi-tl。 1.研究了抗病品种铁杆青对稻瘟病菌的抗谱。苗期喷雾接种和成株期注射接种鉴定结果表明,铁杆青对供试的14个菌系都表现抗病,具有较宽的抗谱。日本抗稻瘟病单基因鉴别品种中Pi-i、Pi-z、Pi-ta、pi-z~t和Pi-t基因对太湖地区优
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