广西兴安转Bt水稻大田两迁害虫发生动态  

Occurrence dynamics of migratory pest insects Cnaphalocrocis medinalis and Sogatella furcifera in transgenic Bt rice field in Xing'an County of Guangxi Province.

作　　者：隋贺[1] 李志毅[1] 徐艳博[1] 韩超[1,2] 韩兰芝[2] 陈法军[1] 

机构地区：[1]南京农业大学植物保护学院昆虫系,南京210095 [2]中国农业科学院植物保护研究所,北京100094

出　　处：《应用生态学报》2011年第11期3021-3025,共5页Chinese Journal of Applied Ecology

基　　金：国家重点基础研究发展计划项目(2010CB126200);国家公益性行业(农业)科研专项(200903051);转基因生物新品种培育重大专项(2009ZX08011-007B;2009ZX08012-005B;2011ZX08012-005);教育部霍英东基金"全球气候变化下转Bt作物氮肥优化管理及其害虫控制技术研究"项目(122033)资助

摘　　要：以转Bt水稻华恢1号(Cry1Ac/CryAb融合基因型,简称HH1)及其对照亲本明恢63(简称MH63)稻田两迁害虫稻纵卷叶螟和白背飞虱为研究对象,系统研究转基因抗虫水稻种植下两迁害虫的发生规律及其致害力差异.结果表明:转Bt水稻及其对照亲本上稻纵卷叶螟的落卵量和幼虫发生量无显著差异,但转Bt水稻的卷叶株率和卷叶率都显著低于对照亲本.表明转Bt水稻对靶标害虫稻纵卷叶螟具有较高抗性.转Bt水稻及对照亲本上白背飞虱若虫、成虫及整个种群的发生动态差异不显著,且转Bt水稻对长翅型和短翅型成虫的种群发生影响也不显著.白背飞虱发生高峰期,转Bt水稻上若虫及短翅型成虫发生量均明显高于对照亲本;相反,转Bt水稻上长翅型成虫发生量明显低于对照亲本,且水稻生育后期长翅型成虫雌性比明显低于对照亲本.转Bt水稻大面积商业化种植下其非靶标害虫白背飞虱的发生危害变得更为复杂.An investigation was conducted in Xing＇an County of Guangxi Province in 2010 to study the occurrence and damage characteristics of two unique migratory pest insects,rice leaffolder（Cnaphalocrocis medinalis） and white-backed planthopper（Sogatella furcifera）,in a transgenic Bt rice（cv.HH1 with dual Cry1Ab＋Cry1Ac genes） field,taking the corresponding non-transgenic parent（cv.MH63） field as the control.No significant differences were observed in the abundance of C.medinalis eggs and larvae in the two fields,but the percentage of fold-leaf plants and the fold-leaf rate per plant were significantly lower in transgenic Bt rice field than in the control,suggesting that transgenic Bt rice had higher resistance against the target pest insect C.medinalis.As for S.furcifera,its occurrence dynamics of nymphs,adults（including macro-and brachypterous forms）,and whole population had no significant differences between the two fields,but the abundance of the nymphs and brachypterous adults at the peak stage of S.furcifera occurrence was obviously higher in transgenic Bt rice field than in the control,while the macropterous abundance was in adverse.The sex ratio of female of the macropterous adults at the late growth stage of rice was generally lower in transgenic Bt rice field than in the control.These results suggested that under the background of large area commercial production of transgenic Bt rice,the occurrence and harm of the non-target pest insect S.furcifera could become more complicated.

关 键 词：转 BT 水稻 稻纵卷叶螟 白背飞虱 发生动态 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]