摘要
2008～2009年,在桃江病圃对湖南省部分杂交水稻主栽品种的抗稻瘟病性进行了鉴定,并以综合指数来评价其抗感水平。结果表明,供试的50个主栽品种稻瘟病抗感水平差异区分明显,无高抗品种,中抗品种有11个,占供试品种的22%;表现中感水平的品种有17个,占34%;表现感及高感水平的品种有22个,占44%,其中金优系列品种全部表现感病。另外,早稻品种表现中抗的比例最高,占参试早稻品种的28.57%,优于中稻与晚稻。研究还结合稻瘟病生态系分区确定了上述抗感水平不同品种的适宜推广地区,以直接指导和应用于水稻生产实际。
The rice-blast resistance of 50 rice leading varieties was identified in Taojiang nursery from 2008 to 2009, and the resistant level of rice leading variety was evaluated by integrated index. The results showed that tested 50 rice leading varieties had obvious differences in the rice-blast resistant level, in which there was none high resistant （HR） or resistant（R） variety, 11 middle resistant （MR） varieties （22%）, 17 intermediately susceptible （MS） varieties （34%）, and 22 susceptible （S） or highly susceptible （HS） varieties （44%）. A series of varieties named Jinyou all showed S or HS to riceblast. Moreover, the resistance frequency of early rice varieties was the highest （28.57%）, which higher than that of middle rice and late rice. In order to provide direct guidance and application reference for rice production, the suitable promoting areas for the above varieties with different resistance levels were discussed based on ecosystem partition of rice-blast.
出处
《湖南农业科学》
2010年第12期106-108,112,共4页
Hunan Agricultural Sciences
基金
湖南省农科院科技创新重点项目"抗稻瘟病水稻种质资源的评价与利用研究"
关键词
水稻主栽品种
稻瘟病
抗性评价
rice leading varieties
rice-blast
resistance evaluation
