转多基因库安托杨对昆虫群落的影响  

Effect of Multiple Transgenic Populus×euramericana‘Guariento’to the Insect Community

作　　者：夏永刚[1] 李密[1] 李永进[1] 廖正乾[1] 

机构地区：[1]湖南省林业科学院,长沙410004

出　　处：《中国农学通报》2013年第19期84-88,共5页Chinese Agricultural Science Bulletin

基　　金：国家林业局科技发展中心项目"转多基因库安托杨2号环境释放和生产性试验安全性监测"(JJ-11-01);湖南省自然科学基金"转基因欧美杨对根际微生物的影响及其机理"(12JJ3031)

摘　　要：为了解转多基因库安托杨在自然生态系统下的生态安全性,于2011-2012年杨树主要生长季节,采用定点取样法对湖南君山地区转多基因库安托杨林昆虫物种多样性进行调查,对主要靶标昆虫云斑天牛(Batocera horsfieldi)在6个调查系号中的数量分布进行比较。结果表明,初步统计转多基因库安托杨混合林内昆虫80种,隶属于7目32科,其中害虫55种,杨扁角叶蜂(Stauronema tuscompressicornis)、杨小舟蛾(Micromelalopha trogldyta)、柳蓝叶甲(Plagiodera versicolora)和云斑天牛为优势种群;转多基因杨树在一定程度上能降低鞘翅目害虫的种群数量,但对云斑天牛的抗虫性与对照杨和本地杨比较差异性不明显(PCK=0.366>0.05和PXL=0.391>0.05);通过比较各调查样区昆虫群落多样性发现,转多基因杨树林无论是群落多样性指数、优势度还是均匀度系数,均与对照区和本地种杨树林差异性不显著(PCK=0.247>0.05和PXL=0.458>0.05)。In order to learn the ecological security of multiple transgenic Populus×euramericana ‘ Guariento ’ in natural ecosystem, an investigation was conducted on the species diversity of insect in the multiple transgenic hybrid poplar in Junshan District by fixed-point survey from 2011 to 2012. And the number characteristics of Batocera horsfieldi collected from 6 sample region were compared. As results, a total of 80 species of insects belonging to 7 orders 32 families were recorded, in which Stauronema tuscompressicornis, Micromelalopha trogldyta, Plagiodera versicolora, Batocera horsfieldi were the dominant populations. The multiple transgenic hybrid poplar could decrease the number of Coleptera insects, but compared with CK and native poplar, its resistance against Batocera horsfieldi was not significant （P CK =0.3660.05 and P XL =0.391 0.05）. Also, there was no significant impact between the multiple transgenic hybrid poplar and CK, native poplar with the richness index, species diversity index, dominance index and evenness index （P CK =0.2470.05 and P XL =0.4580.05）.

关 键 词：转多基因库安托杨 昆虫 群落多样性 云斑天牛 湖南 

分 类 号：S763.3[农业科学—森林保护学] S769[农业科学—林学]