【摘要】 在稻褐飞虱田间种群生物型和翅型分化个体测定的基础上 ,应用聚类分析法对生物型的个体测定结果进行分析 ,并比较属于不同生物型个体的翅型分化情况。研究结果表明 ,稻褐飞虱生物型的个体测定结果可分为 3类 ,分别表现生物型Ⅰ、生物型Ⅱ、孟加拉型的致害力 ,即分别属于生物型Ⅰ、生物型Ⅱ、孟加拉型。属于孟加拉型个体的短翅率显著高于生物型Ⅰ、生物型Ⅱ的个体 ,而属于生物型Ⅰ和生物型Ⅱ的个体则差异不显著。更多还原

【Abstract】 Based on biotypes and wing dimorphism of the rice brown planthopper(BPH), Nilaparvata lugens (Stl), individuals collected from paddy fields, a cluster analysis was applied to analyse the results of biotypes of the BPH individuals.Mean while, the wing dimorphism of individuals belonged to different biotypes were compared.The results indicated that biotypes of the BPH individuals were divided into three groups,each group showed virulence of biotypeⅠ,biotypeⅡ,biotype Bangladesh,respectively.This means each group belonged to biotypeⅠ,biotypeⅡ,biotype Bangladesh. Brachypterous percent of BPH individuals belonged to biotype Bangladesh was higher than those belonged to biotypeⅠ or biotypeⅡ, but there were no significant differences brachypterous ratio between those belonged to biotypeⅠand biotypeⅡ.更多还原