转基因水稻Bt汕优63种植两年对土壤线虫群落的影响  

Effects of two years planting transgenic Bt rice (BtSY63) on soil nematode community

作　　者：李修强[1,2] 陈法军[3] 刘满强[1] 陈小云[1] 胡锋[1] 

机构地区：[1]南京农业大学资源与环境科学学院土壤生态实验室,南京210095 [2]南京白云化工环境监测有限公司,南京210047 [3]南京农业大学植物保护学院,南京210095

出　　处：《应用生态学报》2012年第11期3065-3071,共7页Chinese Journal of Applied Ecology

基　　金：转基因生物新品种培育重大专项(2012ZX08011002;2011ZX08012-005;2009ZX08012-005B)资助

摘　　要：通过连续2年的大田试验,对转基因水稻Bt汕优63(BtSY63)及其亲本汕优63(SY63)种植下大田土壤线虫数量、营养类群组成、生态指标和群落组成进行对比分析.结果表明:BtSY63和SY63种植下土壤线虫数量均随种植时间发生明显波动,但两者间无显著差异;与SY63相比,BtSY63种植下捕杂食线虫百分比和Shannon多样性指数出现了短暂的增加,但仅在个别时间差异显著;非度量多变量排序(nMDS)分析表明,BtSY63和SY63种植下土壤线虫群落组成无显著差异.可见,大田BtSY63种植2年对土壤线虫群落的影响不显著.A two-year field experiment was conducted to evaluate the effects of planting transgenic Bt rice （BtSY63） and its near-isogenic non-Bt rice （SY63） on the soil nematode abundance, trophic group composition, ecological indices, and community structure. With the planting of BtSY63 and SY63, the soil nematode abundance changed obviously with sampling time, but had no significant difference between planting BtSY63 and SY63. Only at specific sampling time, the per- centage of omnivore-predators and the Shannon diversity index of nematode community under the planting of BtSY63 were significantly higher than those under the planting of SY63. The non-metric multidimensional scaling （nMDS） of nematode community revealed that no significant difference was observed in the nematode community composition between planting BtSY63 and SY63 across all sampling times. In conclusion, two years planting BtSY63 had no deleterious effects on the soil nematode community.

关 键 词：转基因作物 Bt汕优63 线虫群落 营养类群 生态指标 

分 类 号：S154.5[农业科学—土壤学]