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重庆市水稻主栽品种对稻瘟病的抗性鉴定

作  者:
勾治琴;韩海波;邸仕忠
单  位:
重庆市涪陵区农业科学研究所
关键词:
水稻品种;稻瘟病;抗性鉴定
摘  要:
采用分菌系人工接种与病圃自然诱发的方法,对2008年重庆市秀山、云阳、梁平等16个区、县提供的冈优725、冈优177、渝优1号等97个生产上推广种植的水稻品种进行抗瘟性鉴定。结果表明:测定品种的平均抗谱率为64.8%,抗谱率最高的为95.1%,最低的为26.8%,抗谱率高于50.0%的有71个,占78.9%;田间鉴定颈瘟达感病或高感的有82个,占84.5%。与近年鉴定结果相比,田间抗性有所下降。
译  名:
重庆市水稻主栽品种对稻瘟病的抗性鉴定
关键词:
Rice Variety;Rice Blast;Resistance Identification
摘  要:
Rice blast Resistance Identification is conducted with artificial infection of various strains and natural induction in nursery on 97 rice varieties in extension and production,including Gangyou 725,Gangyou 177 and Yuyou 1,provided by 16 districts and regions,Xiushan,Yunyang,Liangping,Qijiang,Hechuan,Yubei,etc of Chongqing.The results shows that the average spectral resistance rate is 64.8%,with the highest 95.1% and the lowest 26.8%.71 varieties with spectral resistance rate higher than 50.0% account for 78.9%.82 varieties in field identification of rice blast are infected as disease or highly infected,accounting for 84.5%.Compared with that of recent identification,the field resistance has declined.

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