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时间:2020-06-20
《巨尾桉叶片挥发物对三种植物种子萌发及幼苗生长的化感效应.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、广西植物GuihaiaJu1.2014,34(4):450—454http://journa1.gxzw.gxib.cnllOI:10.3969/J.issn.1O00-3142.2014.04.004唐凤鸾,陈月圆,李典鹏,等.巨尾桉叶片挥发物对3种植物种子萌发及幼苗生长的化感效应[J].广西植物,2014,34(4):450-454TangFL,ChenYY。LiDP,eta1.AllelopathiceffectsofEucalyptusgrandis×E.urophllaleafvolatileonsee
2、dgerminationandseedlinggrowth[J]Guihaia,2014,34(4):450—454巨尾枝叶片挥发物对三种植物种子萌发及幼苗生长的化感效应唐凤鸾,陈月圆,李典鹏,黄宁珍(广西植物功能物质研究与利用重点实验室,广西植物研究所,广西桂林541006)摘要:为探讨人工巨尾桉林叶片挥发物对周边农作物的化感作用,采用不同质量新鲜巨尾桉叶片及由新鲜叶片提取的桉叶油对玉米、辣椒、西红柿等三种植物种子进行处理,观测其种子萌发和幼苗生长状况。结果表明:(1)在三种被测植物中,桉树叶片挥发物对玉米种子
3、萌发影响最小,对辣椒影响最大;(2)当叶片用量小于200g时,桉树叶片挥发物对三种植物种子萌发影响不明显,当叶片用量达400g时,能完全抑制辣椒、西红柿种子萌发,并能极显著降低玉米种子萌发(P<0.01);(3)玉米幼苗芽生长随叶片用量的增加呈现先促进后抑制现象,对芽高、鲜重、干重的促进和抑制均达到显著(P4、的抑制效果与叶片自然挥发物相似,且效果更显著。关键词:巨尾桉;挥发物;化感效应;种子萌发中图分类号:Q945.7文献标识码:A文章编号:1000—3142(2014)04—0450—05AllelopathiceffectsofEucalyptusgrandisxE.urophllaleafvolatileonseedgerminationandseedlinggrowthTANGFeng-Luan,CHENYue-Yuan,LIDian-Peng,HUANGNing-Zhen(GuangxiKeyLaborat5、oryofFunctionalPhytochemicalsResearchandUtilization,CruangxiInstituteofBotany,Guilin541006,China)Abstract:TheallelopathiceffectsofEucalyptusgrandis×E.urophllaplantationleafvolatileonsurroundingcropwereinvestigated,andseedlinggrowthofthreeplantssuchasZeamays,p6、epper,tomatoeswerestudiedbyusingdif—ferentqualityfresheucalyptusleavesandtheeucalyptusessentialonfromfreshleaves,theseedgermination.There—suitsshowedthat:(1)Inthreekindsoftestedplants,E.grandis×E.urophllaleafvolatileshadlittleeffectonzeamaysseedgermination,gr7、eateffectonpepper;(2)Whentheamountwaslessthan200g,E.grandis×E.urophllaleafvolatileshadnoobviouseffectonseedgerminationofthreetestedplants;Whenthedosagewas400g,itcouldcompletelyinhibitseedgerminationofpeppers,tomatoes,andcouldreduceseedgerminationsignificantly8、(P
4、的抑制效果与叶片自然挥发物相似,且效果更显著。关键词:巨尾桉;挥发物;化感效应;种子萌发中图分类号:Q945.7文献标识码:A文章编号:1000—3142(2014)04—0450—05AllelopathiceffectsofEucalyptusgrandisxE.urophllaleafvolatileonseedgerminationandseedlinggrowthTANGFeng-Luan,CHENYue-Yuan,LIDian-Peng,HUANGNing-Zhen(GuangxiKeyLaborat
5、oryofFunctionalPhytochemicalsResearchandUtilization,CruangxiInstituteofBotany,Guilin541006,China)Abstract:TheallelopathiceffectsofEucalyptusgrandis×E.urophllaplantationleafvolatileonsurroundingcropwereinvestigated,andseedlinggrowthofthreeplantssuchasZeamays,p
6、epper,tomatoeswerestudiedbyusingdif—ferentqualityfresheucalyptusleavesandtheeucalyptusessentialonfromfreshleaves,theseedgermination.There—suitsshowedthat:(1)Inthreekindsoftestedplants,E.grandis×E.urophllaleafvolatileshadlittleeffectonzeamaysseedgermination,gr
7、eateffectonpepper;(2)Whentheamountwaslessthan200g,E.grandis×E.urophllaleafvolatileshadnoobviouseffectonseedgerminationofthreetestedplants;Whenthedosagewas400g,itcouldcompletelyinhibitseedgerminationofpeppers,tomatoes,andcouldreduceseedgerminationsignificantly
8、(P
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