Abstract:

【Objective】 Whitefly (Bemisia tabaci Gennadius) is a kind of agricultural pests with wide occurrence, severe harm, strong virulence in soybean around the world, so it is an effective way to breed resistant soybean varieties to control whitefly. This study was to reveal the inheritance of resistance to whitefly in soybean, and provide information for soybean breeding. 【Method】 Two crosses, Qihuang 26×Huapidou and Huapidou×Qihuang 26, were made with the highest resistant germplasm Huapidou and the highest susceptible germplasm Qihuang 26. From the crosses, 4 F2 populations were derived in Jinan and Guanxian of Shandong. The means of whitefly per leaflet (MWPL) of all the populations were identified. Genetic analysis was performed under the major gene + polygene mixed inheritance model in these populations. 【Result】 Resistance of soybean to whitefly was controlled by two major genes and plus polygene, with the major genes inheritability of 86.41%, 85.72%, 95.90%, and 95.26%, respectively. 【Conclusion】The inheritance of resistance to whitefly in soybean was controlled by major genes and polygene, and affected by the environment.

Key words: soybean, whitefly, resistance, inheritance