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时间:2020-06-20
《喷施外源茉莉酸甲酯对兴安落叶松和杨树固碳及其抗虫能力的影响.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、第42卷第5期东北林业大学学报Vo1.42No.52014年5月JOURNALOFNORTHEASTFORESTRYUNIVERSITYMav20l4喷施外源茉莉酸甲酯对兴安落叶松和杨树固碳及其抗虫能力的影响)李媛媛王琪孟昭军赵玉田严善春(东北林业大学,哈尔滨,150040)(黑龙江省森林保护研究所)(东北林业大学)(伊春市五营林业局)(东北林业大学)摘要探讨了植物外源激素对食叶害虫舞毒蛾的防治效果及其对植物固碳能力的影响,利用茉莉酸甲酯喷施兴安落叶松(rixgmelinii)和杨树(Populussp.),之
2、后检测2种植物的生物量和叶绿素质量分数的变化,并测定取食2种处理后植物叶片的舞毒蛾(LynmntriadarL.)幼虫生长发育情况。结果表明:经外源茉莉酸甲酯处理的兴安落叶松的根干质量、鲜质量显著高于对照(PO.05);处理后的杨树根、茎的鲜质量、干质量及全株生物量均显著低于对照(P<0.05)。茉莉酸甲酯处理后。兴安落叶松针叶内叶绿素b和总叶绿素质量分数在第5天、第10天显著高于对照(P<0.05),处理10d后叶绿
3、素a、b和总叶绿素质量分数与对照无显著差异;杨树叶片中,叶绿素a、b和总叶绿素质量分数只有在处理后第10天高于对照,之后均迅速降低,在处理15、25d显著低于对照(P<0.05)。取食茉莉酸甲酯处理的兴安落叶松针叶的3—6龄舞毒蛾幼虫的体质量均显著低于对照组.取食处理组的各龄期虫体质量增长率亦显著低于对照组(P4、,但导致杨树固碳能力降低,对落叶松固碳能力无显著影响。关键词杨树;兴安落叶松;茉莉酸甲酯;固碳;舞毒蛾分类号s791.223:s792.1l;$763.42EfectsofExogenousMethylJasmonateSprayonCarbonSequestrationCapacityofLar/xgmeliniiandPopulussp.andTheirResistancetoInsectPests/LiYuanyuan(NortheastForestryUniversity.Harbinl5OO40,P.5、R.China):WangQi(ForestProtectionResearchInstituteinHeilongjiangProvince);MengZhaojun(NortheastForestryUniversity);ZhaoYutian(WuyingForestryBureau):YanShanchun(NortheastForestryUniversity)//JournalofNortheastForestryUni.versity.-2014.42(5).一97~lo0Westudiedthe6、effectofplantexogenoushormonesontheLymantriad~parL.controlandtheplantcarbonsequestra.tioncapacity.Aftersprayingthemethyliasmonate,wemonitoredthebiomassandchlorophyllcontentofthePopu/淞sp.andLar/xgmelinii.andmeasuredthegrowthanddevelopmentoftheLd~parL.1arvaefe7、edingontheleavesofthesprayedplants.TherootdryandfleshweightsoftheLar/xgmeliniiaresignificantlyhigherthanthoseofun—sprayedcontrol(P<0.05).Thestemdryandfreshweightsaresignificantlylowerthanthoseofthecontrol(P<0.05),buttherearenosignificantdifferencesinthewhole8、plantbiomassbetweenthesprayedtreatmentsandan.sprayedcontrols(P>0.05).Bothfleshanddryweightsofroots.stemsandthewholeplantbiomassofthePopulussp.areallsignificantlylowerthanthoseofthecontrols(P<0.0
4、,但导致杨树固碳能力降低,对落叶松固碳能力无显著影响。关键词杨树;兴安落叶松;茉莉酸甲酯;固碳;舞毒蛾分类号s791.223:s792.1l;$763.42EfectsofExogenousMethylJasmonateSprayonCarbonSequestrationCapacityofLar/xgmeliniiandPopulussp.andTheirResistancetoInsectPests/LiYuanyuan(NortheastForestryUniversity.Harbinl5OO40,P.
5、R.China):WangQi(ForestProtectionResearchInstituteinHeilongjiangProvince);MengZhaojun(NortheastForestryUniversity);ZhaoYutian(WuyingForestryBureau):YanShanchun(NortheastForestryUniversity)//JournalofNortheastForestryUni.versity.-2014.42(5).一97~lo0Westudiedthe
6、effectofplantexogenoushormonesontheLymantriad~parL.controlandtheplantcarbonsequestra.tioncapacity.Aftersprayingthemethyliasmonate,wemonitoredthebiomassandchlorophyllcontentofthePopu/淞sp.andLar/xgmelinii.andmeasuredthegrowthanddevelopmentoftheLd~parL.1arvaefe
7、edingontheleavesofthesprayedplants.TherootdryandfleshweightsoftheLar/xgmeliniiaresignificantlyhigherthanthoseofun—sprayedcontrol(P<0.05).Thestemdryandfreshweightsaresignificantlylowerthanthoseofthecontrol(P<0.05),buttherearenosignificantdifferencesinthewhole
8、plantbiomassbetweenthesprayedtreatmentsandan.sprayedcontrols(P>0.05).Bothfleshanddryweightsofroots.stemsandthewholeplantbiomassofthePopulussp.areallsignificantlylowerthanthoseofthecontrols(P<0.0
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