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采用改良的国际苗期群体筛选法,对57个水稻新品种进行褐稻虱和白背飞虱抗性鉴定,结果表明:(1)对褐稻虱表现抗级、兼抗或中抗白背飞虱的有2个品种,占测定总数的3.5%;(2)对褐稻虱达到抗级水平的有14个,中抗水平的有7个,分别占测定总数的24.5%和12.3%;(3)对白背飞虱达到抗和中抗的品种只有2个,其余占总数96.5%的55个品种均对白背飞虱敏感。针对白背飞虱在我省部分地区上升为优势种群的问题,提出应该重视抗虫品种的选育工作。
The results showed that: (1) The resistance to brown planthopper showed anti-class and anti-anti-or white-backed There were 2 varieties of planthopper, accounting for 3.5% of the total number of tested plants. (2) 14 were resistant to brown planthopper and 7 were moderately resistant to brown planthopper, accounting for 24.5% and 12.3% of the total respectively. (3) There were only 2 resistant and moderate resistant whitebacked planthoppers, and the remaining 55 species (96.5% of total) were sensitive to whitebacked planthopper. In view of the problem that the whitebacked planthopper was raised to the dominant population in some areas of our province, we proposed that the selection of insect-resistant varieties should be emphasized.