转Gbve1基因棉对棉田动物群落结构及稳定性影响

【目的】 以亲本棉为对照,研究5组转Gbve1基因棉花株系对棉田生物群落分布以及环境的影响。【方法】 以棉花3叶期为起始日期,采用随机调查法,查看整株棉花所有器官,记录棉株上所见节肢动物的种类及数量。【结果】 转Gbve1基因棉田主要害虫的相对多度除朱砂叶螨、烟粉虱和棉叶蝉 与对照棉田间有显著差异外,其余主要害虫均无显著差异(P>0.05)。不同品系棉田中刺吸式害虫和咀嚼式害虫之间均无显著差异(P>0.05);而转Gbve1基因棉田中物种多样性指数、均匀度指数和优势集中性指数与对照相比均差异不显著(P>0.05);且转基因棉田与对照棉田节肢动物群落存在较高的相似性(0.681 4 ~ 0.820 9)。【结论】 不同品系棉田中主要昆虫群落消长动态显示,除个别品系在个别生育时期、个别昆虫之间存在显著差异,其余与对照相比消长动态均无显著差异,表明转抗黄萎病基因棉花并不影响棉田动物群落的结构和稳定性。

The Impacts of the Transgenic Gbve1 Gene on the Structure and Stability of Animal Community in Cotton Fields

【Objective】 This project aims to study the effects of five transgenic Gbve1 cotton lines on the distribution of biological community and environment safety in cotton fields by using a parent cotton line as control.【Method】 The cotton 3 leaf stage was taken as the starting date, all the organs of the whole cotton were observed by random survey method, and the species and numbers of all arthropods on cotton were recorded.【Result】 The results showed that the relative abundance of the main pests in the cotton field was not significantly different except for significant differences between transgenic cotton fields and control fields about Carmine spider mite, whitefly, leafhopper (P> 0.05), and overall, there was no significant difference between the sucking pest and the chewing pest in different cotton fields (P> 0.05); There was no significant difference in the parameters of species (H', J, C) between transgenic cotton fields and the control cotton fields (P> 0.05), and the similarity of arthropod community was higher between transgenic cotton and control cotton (0.681,4-0.820,9);【Conclusion】 Based on the dynamic analysis of the main insect community in different cotton fields, it has been found that the trend of insects in transgenic cotton field is basically the same as that of control cotton field, and there was no significant difference in dynamic analysis of the main insect community in different cotton fields except for individual growth period and individual insects community fluctuation dynamics of individual strains. Our results demonstrate that the transgenic cotton do not affect the structure and stability of animal community in cotton fields.