Effect of the transgenic Bt rice variety “Ganlv 1” on the feeding, oviposition behavior and development of Nilaparvata lugens (Stal)

Author of the article:XU Xue-Liang1** XIAO Ye-Qing2 JI Xiang-Yun3 LIU Zi-Rong1 CHEN Lian-Sheng4JIANG Jie-Xian3 CHEN D

Author's Workplace：1. Applied Agricultural Micro-organism Research, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China; 2 Institute of Rice Research, Jiangxi Academy of Agricultural Sciences , Nanchang 330200, China; 3. Eco-environment Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; 4. Technology Promotion Center of Agriculture in Dongxiang ,Fuzhou 331800, China

Key Words：transgenic Bt rice, Nilaparvata lugens, feeding behavior, oviposition behavior, development

Abstract： [Objectives]  To assess the potential impact of the transgenic cry1Ab/Ac rice variety “Ganlv 1” on the brown planthopper (BPH). [Methods]  The resistance of “Ganlv 1” and non-transgenic control rice to BPH was compared using the Standard Seedbox Screening Technique (SST). The feeding and oviposition behavior of BPH on “Ganlv 1” and control rice were measured by conducting a feeding and oviposition selectivity experiment. The effects of “Ganlv 1” on development (nymph duration and adult weight) and reproduction (number of offspring) of BPH were evaluated by feeding five successive BPH generations on this variety. [Results]  Both “Ganlv 1” and non-transgenic rice showed moderate resistance to BPH at the seedling stage. There were no significant differences in the feeding or oviposition preferences of BPH for “Ganlv 1” vs the non-transgenic strain. No significant differences in nymph duration, adult weight and number of 2nd and 5th generation offspring were found between BPH fed on “Ganlv 1” and the non-transgenic strain, except that the duration of the 3rd instar of the 2nd generation fed on “Ganlv 1” was shorter than that fed on non-transgenic rice. [Conclusion]  There was no obvious adverse effect on the resistance of seedlings to BPH between the transgenic Bt rice “Ganlv 1” and a non-transgenic strain, nor were there significant differences in the feeding and oviposition preferences, or development, of BPH fed on “Ganlv 1” compared to those fed on the non-transgenic strain.