水稻褐飞虱(Nilaparvata lugens)是亚洲南部和东南部最严重的害虫之一。由干应用了垂直抗性品种,导致了飞虱生物型选择的破坏。田间抗性即水平抗性正被人们评价。本文研究了两个传系品种“Ulri Raapan”和“Triveni”对飞虱田间抗性的遗传行为。用二令或三令的飞虱若虫接种20天秧令的幼苗。用感虫亲本“TNI”与抗虫品种杂交,F_1代、F_2代和F_3代群体的抗虫反应表明:两个品种中存在有二个独立的隐性基因。等位性试验表 Nilaparvata lugens is one of the most serious pests in southern and southeastern Asia. Vertical resistant varieties were used by stems, resulting in the destruction of planthopper biotypes. Field resistance, known as horizontal resistance, is being evaluated. In this paper, we studied the genetic behavior of two resistance lines “Ulri Raapan” and “Triveni” in the field of planthopper resistance. Seedlings of 20 days seedling were inoculated with two or three planthopper nymphs. The insecticidal response of F_1 generation, F_2 generation and F_3 generation population showed that there were two independent recessive genes in the two varieties. Allelism test table