袁隆平团队成功培育出“抗癌”的超级杂交稻
文章来源: 科技日报 于
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"稻瘟病"是水稻生长过程中最为严重的病害之一,俗称水稻"癌症"。据《科技日报》今日(21日)报道,中国工程院士、"杂交水稻之父"袁隆平的团队在湖南的工作站成功培育出含不同稻瘟病抗性基因的超级杂交稻新品种。
稻瘟病发病严重时,可致水稻大面积减产,甚至绝收(完全无收成)。袁隆平团队核心育种专家邓启云表示,截至目前,对付稻瘟病并无一劳永逸的方法。
为解决这一技术难题,湖南袁创超级稻技术有限公司与袁隆平团队共建院士专家工作站平台,引进了国际水稻所研究员周波的稻瘟病菌变异监控技术,提出了"抗性品种走在病原菌变化之前"的策略。根据这一策略,工作站建立了稻瘟病菌动态监控平台。连续多年对长江上、中、下游和华南稻区多省市稻瘟病重灾区收集发病叶片或枝梗,分离稻瘟病生理小种并鉴定致病性,构建了不同地区具代表性的稻瘟病生理小种库,实现了不同地区稻瘟病生理小种群体变化规律的动态监测。
"利用该平台,针对稻瘟病菌生理小种群体的变化,再布局含有对应抗性基因的杂交水稻品种,能让抗性品种走在病原菌变化之前。"邓启云说。基于该平台数据,成功培育出旺两优958等抗稻瘟病超级杂交稻新品种。
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