摘要
以转cry1Ac/sck双基因抗虫水稻MSA、MSB、MSA4(对照:MH86)及其杂交稻KF6-304(对照:Ⅱ-YM86)为材料,系统地研究了转基因抗虫水稻对稻田寄生蜂群落的影响及生态安全性。结果表明:在群落水平上,转基因抗虫水稻MSA、MSB、MSA4及杂交稻KF6-304对稻田寄生蜂的物种丰富度、多样性指数、均匀性指数和优势集中性指数的总体情况与时间动态以及个体总数无明显负面影响,但在生长中期转基因稻可降低稻田寄生蜂的个体数量。按寄生蜂功能团分析,MSA与MSA4在水稻生长发育的后期初始,提高卵寄生蜂的数量,MSA、MSB、MSA4及杂交稻KF6-304显著降低以靶标害虫稻纵卷叶螟为寄主的寄生蜂功能团的个体数量,对其他寄生蜂无明显负面影响。
Effects of three transgenic rice lines （MSA, MSB and MSA4） and one transgenic hybrid rice line （KF6-304） with a fused double genes of crylAc and sck （crylAc/sck rice） on the parasitoid communities in paddy fields were investigated, and the ecological safety of these crylAc/sck rice lines were evaluated. Untransformed rice MH86 was used as the control for MSA, MSA and MSA4, while Ⅱ-YM86 as the control for KF6-304. The results showed that no significant differences were found both in overall situation and temporal dynamics of species richness, diversity, evenness and dominance indices of the parasitoid communities in paddy fields of different rice lines between the transgenic rice lines and their control rice lines, and the same when evaluated with the total number of individuals. However, cry1 Ac/sck rice lines decreased the number of individuals of parasitoids at the middle stage of rice growth. The data of the function groups of parasitoids revealed that MSA and MSA4 increased the number of individuals of egg parasitoids at the beginning of late stage of rice growth, and all crylAclsck rice lines markedly decreased the number of individuals of the function group of parasitoids which attacked the target pest Cnaphalocrocis medinalis, but had no significant negative effects on other function groups of parasitoids on no-target pest insects.
出处
《昆虫学报》
CAS
CSCD
北大核心
2006年第6期955-962,共8页
Acta Entomologica Sinica
基金
国家自然科学基金项目(30270879)
国家"863"项目(2001AA212261)
湖南省杰出青年科学基金项目(04JJ1003)
湖南省自然科学基金(02JJY5009)
湖南省教育厅重点项目(05A012)
