【摘要】 就国内外水稻品种资源共2595份对白背飞虱的抗性进行了鉴定。国内品种资源,高抗的有:698、安农769-2等3个;抗级的有:176393、安农769-6等5个;中抗的有:32选5、765等11个。国外引种,高抗的有:库鲁抗德拉韦布拉、IR289-98-2-3-2-2等3个;抗级的有:IR28、GBESAMBA48、Merak等11个;中抗品种有:IET5120、Kahatasamba、IR30、BKN6809-74-10、IR2053-241-3-2-3等28个。白背飞虱取食在抗性品种上的生存率显著地低于感虫对照品种,并且个体小,发育进度缓慢,后代群体密度亦比感虫品种低,说明水稻品种抗白背飞虱的机制属抗生范畴。更多还原

【Abstract】 Screening rice for resistance to whitebacked planthoppers was conducted under field and greehouse conditions in Anren County, Hunan province. Among the local varieties tested, 3 were highly resistant(such as 698 and An-Nong 769-2), 5 resistant(such as 176393 and An-Nong 769-6) and 11 moderately resistant(such as 32 Xuan 5 and 765); and among the foreign varieties tested, 3 were highly resistant(such as IR289-98-2-3-2-2), 11 resistant(such as IR28, GBESAMBA48 and Merak), and moderately resistant(such as IET5120, Kahatasamba, IR30, BKN6809-74-40 and IR2053-241-3-2-3).The insects fed on the resistant varieties had lower fecundity, higher mortality, smaller body size and lower population builation buildup, these indicated the presence of antibiosis factors.更多还原