Abstract: Whitebacked planthopper (WBPH) resistance in Chinese japonica rice Chunjiang 06 (CJ-06) was expressed by sucking inhibitory and ovicidal traits. Modes of inheritance of both these traits were analyzed by using F₁ and F₂ progenies from reciprocal crosses between CJ-06 and a susceptible indica variety TN1. All the F₁ progeny were resistant, having both the sucking inhibitory and ovicidal traits. The two resistant traits of F 2 progeny segregated independently at the ratio of 3 (resistant) ∶ 1 (susceptible). Four phenotypes with differential combinations of sucking inhibitory and ovicidal traits segregated into the ratio of 9 ∶ 3 ∶ 3 ∶ 1, indicated that respective single dominant genes independently governed both the sucking inhibitory and ovicidal traits in CJ-06. The sucking inhibitory trait in CJ-06 could easily be introduced into Japanese japonica rice, Nihonbare, Hokuriku-153 and Koshihikari by conventional crossing.

Key words: whitebacked planthopper, varietal resistance, japonica rice, sucking inhibitory trait, ovicidal trait, inheritance

摘要： 分析了高抗白背飞虱、对白背飞虱的抗性表现为拒取食性和杀卵作用的中国粳稻春江06和感虫籼稻品种TN1正反交获得的F[sub]1[/sub]和F[sub]2[/sub]代拒取食性和杀卵作用的遗传方式。所有的F[sub]1[/sub]稻株都具有拒取食和杀卵作用。两种抗性在F[sub]2[/sub]代中以3∶1的抗感比例独立分离。具有拒取食和杀卵抗性的不同组合的4种表现型以9∶3∶3∶1分离。表型分离说明春江06中的拒取食性和杀卵抗性分别受一个显性基因控制。采用常规的杂交方法可以容易地将春江06中的拒取食抗性导入日本粳稻品种日本晴、北陆153和越光中。

关键词: 白背飞虱, 品种抗性, 粳稻, 拒取食抗性, 杀卵抗性, 遗传