【摘要】 以湖南省水稻区试抗性鉴定结果为依据,对1985—2007年通过湖南省审(认)定的282个水稻品种(组合)进行了白叶枯病和稻瘟病抗性分析。在审定的205个杂交稻组合中,表现抗或中抗白叶枯病的组合有30个,占14.6%,表现抗或中抗稻瘟病的组合有9个,占4.4%;在审定的77个常规稻品种中,抗或中抗白叶枯病的品种有23个,占29.9%,抗或中抗稻瘟病的品种有19个,占24.7%。说明湖南杂交水稻抗性育种水平急需提升。更多还原

【Abstract】 Based on the results of identification and evaluation of the resistances in rice regional trials of Hunan Province,the analysis of 282 rice varieties certified during 1985~2007 on the resistances of bacterial leaf blight(BLB) and blast was conducted.Among 205 hybrid rice varieties,there were 30 ones or 14.6% of them resistant or intermediately resistant to BLB,9 ones or 4.4% of them resistant or intermediately resistant to blast,while among 77 inbred rice varieties,there were 23 ones or 29.9% of them resistant or intermediately resistant to BLB,19 ones or 24.7% of them resistant or intermediately resistant to blast,indicating that it is urgent to greatly improve varietal disease resistances in the breeding of hybrid rice in Hunan Province.更多还原