马尾松林下3种药用植物光合和叶绿素荧光特征  

Photosynthesis and Chlorophyll Fluorescence of three Medicinal Plants under Pinus massoniana Lamb.

作　　者：姜霞 周炳煌 袁丛军 丁访军 JIANG Xia;ZHOU Binghuang;YUAN Congjun;DING Fangjun(Guizhou Academy of Forestry,Guiyang 550005,Guizhou,China;Guizhou Liping Rocky Desertification Ecosystem Observation and Research Station,Qiandongnan 556200,Guizhou,China)

机构地区：[1]贵州省林业科学研究院,贵州贵阳550005 [2]贵州黎平石漠生态系统定位观测研究站,贵州黔东南556200

出　　处：《贵州林业科技》2024年第4期38-44,共7页Guizhou Forestry Science and Technology

基　　金：黔科合服企〔2020〕4010。

摘　　要：以马尾松林下草珊瑚、华重楼、箭叶淫羊藿为研究对象,通过研究3种药用植物光合和叶绿素荧光特征,揭示其在林下环境的适应机制,为3种药用植物林下栽培和推广应用提供科学依据。选择长势基本一致的3年生草珊瑚、华重楼、箭叶淫羊藿,使用Li-6800测定其光合和叶绿素荧光动力学参数。结果表明:3种药用植物的P_(n)、T_(r)、G_(s)、WUE、F_(o)、F_(m)、F_(v)差异显著(P<0.05),以华重楼最大,且显著高于草珊瑚和箭叶淫羊藿;3种药用植物的F_(v)/F_(m)、F_(v)/F_(o)、F_(v)′/F_(m)′差异不显著(P>0.05);AQY、R_(d)、P_(nmax)、LCP、LSP均依次为华重楼>箭叶淫羊藿>草珊瑚;3种药用植物的qP和φPSⅡ变化趋势一致,随着PAR的增加均呈下降趋势;NPQ和ETR变化趋势一致,随着PAR的增加呈先增加后平缓下降的趋势。3种药用植物在马尾松林下生长均未受到抑制,但其光合和叶绿素荧光特征存在差异,表现为华重楼光合作用最强,箭叶淫羊藿次之,草珊瑚较弱。The photosynthetic and chlorophyll fluorescence of Sarcandra glabra,Paris polyphylla and Epimedium sagittatum were studied under Punus massoniana Lamb.,in order to reveal their adaptation mechanism under the forest environment.Li-6800 Portable Photosynthesis System was utilized to measure the photosynthetic parameters and chlorophyll fluorescence kinetic parameters of three medicinal plants.The results show that there were the significant differences in P_(n),T_(r),G_(s),WUE,F_(o),F_(m)and F_(v)of the three medicinal plants(P<0.05),where the values of P.polyphylla were the largest and significantly higher than those of S.glabra and E.sagittatum.There were non-significant differences(P>0.05)in F_(v)/F_(m),F_(v)/F_(o)and F_(v)′/F_(m)′of three medicinal plants.AQY,R_(d),P_(nmax),LCP and LSP of three medicinal plants were ranked in the descending order of the P.polyphylla>E.sagittatum.>S.glabra.There was the consistent trend of qP andφPSⅡof three medicinal plants,indicating the decrease with the increase of PAR;While the NPQ and ETR increased first and then decreased slowly with the increase of PAR.Therefore,the growth of the three medicinal plants was free from inhibition under the P.massoniana forest.Specifically,the photosynthesis and the light energy utilization of P.polyphylla were the strongest,the E.Sagittatum was the second,and the S.glabra was the weakest.The finding can provide the scientific basis for the cultivation and application of P.polyphylla,E.Sagittatum and S.glabra medicinal plants under forest.

关 键 词：林下药用植物 光合特性 叶绿素荧光特性 

分 类 号：S722.3[农业科学—林木遗传育种]