Resistance of different rice varieties (lines) to the brown planthopper (Nilaparvata lugens)
Author of the article:HU Xin-Di；YANG Jing-Bo；LI Xiang-Min；WEI Hong-Yi
Author's Workplace：College of Agronomy, Jiangxi Agriculture University, Nanchang 330045, China; The Institute of Plant Protection, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
Key Words： rice varieties, Nilaparvata lugens (St?l), standard seedbox screening technique (SSST), resistance screening, resistance grade
Abstract：
[Objectives] To provide basic data for developing and promoting the use of rice varieties resistant to the brown planthopper (BPH) Nilaparvata lugens (Stål). [Methods] The resistance of 25 rice varieties, including 3 early varieties, 15 middle varieties, and 7 late, varieties, to BPH was evaluated using the standard seedbox screening technique (SSST) during both the seedling and adult stages of growth. [Results] All 3 early-rice varieties were either sensitive, or highly sensitive, to BPH during both the seedling and adult stages. Two middle-rice varieties, Longliangyou534 and Wushansimiao, were moderately resistant to BPH at the seedling stage, but sensitive to BPH at the adult stage. The other 13 middle-rice varieties were either sensitive, or highly sensitive, to BPH. Two late rice varieties, Gaoyouhong88 and Fengyuanyou2297, were moderately resistant to BPH at the adult stage, but sensitive to BPH at the seedling stage. The other 5 late-rice varieties were sensitive, or highly sensitive, at both the seedling and adult stages. [Conclusion] At present, most of the rice varieties planted in Jiangxi are sensitive, or highly sensitive, to BPH and the few resistant varieties have relatively low resistance to this pest.