论文部分内容阅读
对湖北省2006-2011年687份水稻区试品种(系)进行田间病圃自然诱发抗稻瘟病鉴定。鉴定结果表明,表现抗病的品种(系)占4.08%,表现感病的品种(系)占95.92%,感病品种(系)所占的比例大于抗病品种(系)。区试对照材料的感病率为98.75%,每年感病对照材料稻瘟病发病均能达到感病或高感水平,且发病稳定,这为水稻区试品种(系)抗稻瘟病鉴定奠定了基础。研究明确了近年来湖北省水稻区试品种(系)的抗稻瘟病现状及发展趋势,可为水稻新品种的合理布局和抗稻瘟病育种提供参考。
In this paper, 687 rice cultivars (lines) from 2006 to 2011 in Hubei province were identified as naturally induced blast resistance in field nurseries. The results showed that the susceptible varieties (lines) accounted for 4.08%, the susceptible varieties (lines) accounted for 95.92%, and the susceptible varieties (lines) accounted for more than the resistant varieties (lines). The susceptible rate of the test material was 98.75%. The incidence of susceptible or highly susceptible rice blast infected with the susceptible material was stable and stable, which laid the foundation for the identification of rice blast varieties . The research identified the status and development trend of resistance to rice blast in the rice variety (line) in Hubei province in recent years, which could provide reference for the rational layout of new rice varieties and breeding of rice blast.