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时间:2018-04-15
《滞育持续期对草地螟滞育解除后蛹生长发育的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2013,39(5):140-143PlantProtection滞育持续期对草地螟滞育解除后蛹生长发育的影响吕晓飞,江幸福*,罗礼智(中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193)摘要为了研究滞育持续期对草地螟(LoxostegesticticalisL.)滞育解除后蛹生长发育的影响,本试验以非滞育幼虫发育而来的蛹作对照,观察了从5种滞育持续期(2、4、6、8、10个月)条件下发育而来的蛹生长发育和存活情况。结果表明:不同处理间草地螟蛹重、化蛹前期、蛹期和蛹的存活率均差异显著。其中,非滞育幼虫发育而来的蛹最
2、重,显著高于其他滞育持续期的,但不同滞育持续期的幼虫发育而来的蛹重差异不显著;所有经过滞育的化蛹前期均显著延长,其中以滞育2个月幼虫解除后的最长(14.78d),其余处理随滞育持续期的延长,化蛹前期显著延长;所有经过滞育的幼虫滞育后蛹期均显著延长,其中以滞育2个月和6个月幼虫发育来的蛹期最长,滞育4、8、10个月幼虫发育而来的蛹期差异不显著;随着滞育时间的延长,蛹的存活率显著降低。关键词草地螟;滞育持续期;生长发育;存活中图分类号:S433.4文献标识码:ADOI:10.3969/j.issn.0529-1542.2013.05.020Eff
3、ectsofdiapausedurationonthegrowthanddevelopmentofpost-diapausepupaeinthebeetwebwormLoxostegesticticalisLüXiaofei,JiangXingfu,LuoLizhi(StateKeyLaboratoryforBiologyofPlantDiseasesandInsectPests,InstituteofPlantProtection,ChineseAcademyofAgriculturalSciences,Beijing100193,Chin
4、a)AbstractTodetermineeffectsofdiapausedurationonthegrowthanddevelopmentofpost-diapausepupaeofLoxostegesticticalis,pupalweight,post-diapausedevelopmentaltimeofpre-pupaeandpupaeandpupalsurvivalratewereinvestigatedoriginatingfromdifferentdiapauseperiodsof2,4,6,8,10monthsandnon
5、-diapauselar-vaeunderthecontrolledlaboratoryconditions.Theresultsshowedthattheweightofpupaeoriginatedfromnon-diapauselarvaewasthehighestandsignificantlyhigherthanthatfromdiapauselarvae,whileweightofpupaeoriginatedfromdifferentdiapausedurationof2,4,6,8,10monthslarvaeshowedno
6、significantdifference.Thedevelopmentaltimeofpre-pupaeandpupaeofpost-diapausedevelopmentwassignificantlylongerthanthatofnon-diapauseindividuals.Pre-pupalperiodofpost-diapauseindividualswithashortdiapauseof2mothswasthelongest.Thepupalperiodofpost-diapauseindividualswithdiapau
7、sedurationof2and6monthswassignificantlylongerthanthatwithdiapausedurationof4,8and10months.Thesurvivalrateofpost-diapausepupaewassig-nificantlylowerthanthatofnon-diapauseindividuals,indicatingthatlongerdiapausedurationhasnegativeeffectonpupalsurvival.KeywordsLoxostegestictic
8、alis;diapauseduration;growthanddevelopment;survivalrate[3]草地螟是我国华北、东北和西北(三北)地区农牧持续
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