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时间:2020-04-16
《西花蓟马对二斑叶螨为害菜豆的选择性与挥发物的关系-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、{氢饧镰;2014,40(1):77—83PlantProtection西花蓟马对二斑叶螨为害菜豆的选择性与挥发物的关系田甜,郅军锐,牟峰(贵州大学昆虫研究所,贵州山地农业病虫害重点实验室,贵阳550025)摘要研究了二斑叶螨雌成螨的密度分别为5、1O、15头/株,为害时间分别为2、4、6d时,西花蓟马2龄若虫对上述处理菜豆的选择性,并通过气相色普质谱联用仪分析鉴定了相应处理菜豆的挥发物。结果表明,在菜豆上二斑叶螨密度为lO头/株和15头/株时,西花蓟马均趋向于选择二斑叶螨为害4d的植株,二斑叶螨密度为5头/株时
2、,西花蓟马对不同为害时间菜豆的选择性差异不显著。在二斑叶螨为害的3个时间段下,西花蓟马2龄若虫均趋向于15头二斑叶螨为害的植株,对5头为害株的选择性最差,表明高密度的二斑叶螨为害株对西花蓟马有一定的吸引作用。挥发物的种类和含量在二斑叶螨不同密度不同时间为害下存在一定差异,推测1庚烯一3一酮、新植二烯、(z)一3-己烯一2_甲基_丁酸酯、2,6一二甲基一辛烷、3~甲基一壬烷、十三烷对西花蓟马具有一定的吸引作用,1,4_己二烯3_醇、1辛烯一3一醇、2一乙基一己醇、反式一2,4_二烯醛、环柠檬醛、顺式一3一己烯醇2_
3、甲基一2_丁烯酸酯对西花蓟马具有一定的驱避作用。关键词西花蓟马;二斑叶螨;选择性;挥发物;菜豆中图分类号:S436.43文献标识码:A1901:10.3969/j.issn.0529—1542.2014.01.013TheinteractionsbetweenvolatilesandselectivityofFrankliniellaoccidentalistokidneybeandamagedbyTetranychusurticaeTianTian,ZhiJunrui,MouFeng(InstituteofEn
4、tomology,GuizhouUniversity,TheProvincialKeyLaboratoryforAgriculturalPestManagementofMountainousRegion,Guiyang550025,China)AbstractTheselectivityofthe2ndinstarlarvaeofFrankliniellaoccidentalistodifferenttreatedkidneybeansdamagedbvtranychusurticaefemalesatdiffe
5、rentdensitiesandtimeswastested,andthevolatilesreleasedfromdifferenttreatedbeanswereevaluatedbvGC.MS.TheresultsshowedthatF.occidentaliswasmorelikelytoselectbeanplantsdamagedfor4days,whendensitieswere10mites/plantand15mites/plant,respectively.Thrips’se—lectivit
6、ytobeanplantsdamagedatdifferenttimeswasnotsignificantlydifferentatthedensitiesof5mites/plant.F.occidentalistendedtoselectbeansdamagedby15femaleadultsofT.urticaeat3damagingtimesbymites.Thepreferenceofthripstoplantsdamagedby5mites/plantwasworst,whichindicatedth
7、atthripstendedtoselectplantsdamagedbyhigherdensityofmites.Thevolatilesamongdifferenttreatedbeanplantsweredifferentincomponentsandcontentstosomeextent.Itwasspeculatedthat1-hepten一3一one,neophytadiene,(Z)一3-hexenyl2一methylbutanoate,2,6-dimethy1.octane,3-methy1.n
8、onane,andtridecanemightbeattractivetoF.occidentalis;while1,4一hexadien一3.Ol,1-octen一3一Ol,2-ethylhexanol,(E,E).2,4-heptadienal,—cyclocitral,and(Z)一3-hexenyltiglatewererepellenttoF.occidenta
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