叶片与树枝绿色组织C4酶活性、色素含量、叶绿素荧光特征与光谱特征的差异

《叶片与树枝绿色组织C4酶活性、色素含量、叶绿素荧光特征与光谱特征的差异》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、。、．摘要树叶片和树枝绿色组织5种c4酶活的性均显著高于丁香和落叶松。4．多种植物叶片与树皮光谱特征的差异通过对39个树种光谱特征的测定发现，叶片和树皮的反射率多数情况下不具有类似的光谱特征。在所测定的39个树种中有6个种表现为类似光谱特征，有33个种的光谱特征存在差异。其中，叶片的反射率多数情况下高于树皮的反射率，只有10个种的树枝反射率高于叶片。关键词丁香；杨树；落叶松；树枝绿色组织；C4光合酶；电子传递速率；光谱特征。。。．。。。。。。；；。。：』些呈呈呈[-：。。，。。。。。。。。。。。；。。。

2、二．-：=s==s=—一Abstract1leescouldfixC02thoughphotosynthesistoproduceallkindsoforganicmatternessesarytoplantgrowthandmaintenance，theleafisthemainplaceofthisphotosyntheticprocess，solimitedmessagesisavailableforthechlorenchymaunderlyingthebarkofbranches，wtlota

3、kelargepercentageofforestrybiomass．Thisstudymainlyfocusedonwhat’sthedi仃erentbetweenpigmentsandchlorophyllfluorescencecharacteristicinthebranchchlorenchymawithreferencestoitsownleaf．ResearchthedifferentbetweenC4enzymesac“ities．pigmentscontent，chlorophyllf

4、luorescenceandspectralcharacteristicmleafandbranchchlorenchymaofclove，poplarandlarch，thefollowingconclusionswerefound：1．Themfljenncesofpigmentcontentbetweenleafandbranchchlorenchymaofcolve，poplarandlarchTllroughmeasuringthepigmentcontentbetweenleafandbra

5、nchchlorenchymaofcone，poplarandlarchfoundthat：chlorophyllcontentinleafmorethaninbranch．Whenexpressedasun“ofsquarcmeasure，Chl．刮-binleafofconefrom230mg／mzto620mg／m2，carotenoid舶m50mg／m2to85mg／m2；Chl．a+binbranchofcolvefromlOOmg／mzto300mg／m上，carotenoidf．rom60

6、m∥In2to60mg／m2；Chl．a十binleafofpoplarfrom200mg／m2to700mg／m‘，carotenoid仔om30m∥In2to90mg／m2；Chl．甜．binbranchofpoplarfrom150mg／Mto260mg／o；Chl．a十binleafoflarchfromlOmg／m2to500megm，carotenoidfromlOmg／m'to60mg／m2；Chl．a十binbranchoflarchfrom100mg／m2to200mg／m2，caro

7、tenoidfrom20mg／mzto70mg／m2．2．Thedif亿rencesofelectronictransportationratebetweenleafandbranchchlorenchymacoive，poplarandlarchThrougllmeasuringtheelectronictransportationratebetweenleafandbranchchlorenchymaofcolve，poplarandlarchfoundthat：inmostcases，theele

8、ctronictransportatlonrateinleafofcolveWashigherthaninbranch，themaximumvalueofleafappearedatJulandthebmnchappearedatJun；alloftheelectronictransportationrateinleafofpoplarwashigherⅡl觚inbraIlc也themaximumvalueofleafappearedatJ