Effect of transgenic Bt rice on the population dynamics of the brown planthopper, Nilaparvata lugens (St?l) and two of its natural enemies
Author of the article:LIANG Yu-Yong1** CHENG Zheng-Xin1 CHENG Sen-Di2 QIN Hou-Guo1XIONG Huan-Bao1 CHEN Nan-Ping1 HU Shui-Xiu1
Author's Workplace：1. Institute of Plant Protection, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China;2. Jiangxi University of Science and Technology, Nanchang 330200, China
Key Words：Nilaparvata lugens, transgenic Bt rice, spiders, Cyrtorhinus lividipennis, population dynamics
Abstract：
[Objectives] To evaluate the effect of transgenic Bt rice on the population dynamics of the brown planthopper (BPH), Nilaparvata lugens (Stål) and two of their natural enemies in paddy fields. [Methods] Two treatments; namely the HH1 and MH63 rice varieties, were established, each with 3 replicates. We surveyed the quantities of brown planthopper, N. lugens and their two main natural enemies, including spiders and Cyrtorhinus lividipennis, in the different treatment crops. [Results] The HH1 rice crop exerted little influence on the abundance of N. lugens, spiders and C. lividipennis, and the abundance of N. lugens, spiders and C. lividipennis in HH1 rice fields was not significantly different compared to that in MH63 rice fields during the entire rice growth cycle. [Conclusion] Transgenic cry1Ab/Ac gene rice has no obvious negative effects on the quantities of N. lugens, spiders and C. lividipennis in paddy fields.