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四川稻区新育成五个抗瘟性水稻品种的抗谱测试

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摘要 利用全国统一的七个鉴别品种,对采自四川各大稻区的120个稻瘟病菌样进行生理小种鉴定,共鉴定出4大群9个生理小种:4大群分别是ZB、ZC、ZG和ZE群,9个生理小种分别是:ZB31、ZB29、ZB13、ZB21、ZB15、ZB32、ZC15、ZG1、ZE1。5年来优势种群ZB群一直保持相对稳定,优势小种是ZB31、ZB29。运用鉴别出来的生理小种对四川4个抗病品种R9、R10、3263、448及Lemont和普感品种丽江黑谷进行抗谱测试,测试结果表明:丽江黑谷对四川的生理小种均表现感病,R10对全部生理小种表现抗性,R9只对E1和G1表现感病,3263仅对C15、B29表现感病,448仅对B31生理小种表现感病。表明四川几个抗性水稻品种均具有多个抗不同生理小种的抗性基因,为后期进行基因的聚合与转移奠定基础。
出处 《河南农业》 2019年第9期50-51,共2页
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