红花檐木3个实生变异株系表型与光合特性的比较分析

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中图分类号：S687 文献标识码：A 文章编号：1006-060X（2025）05-0085-06

引用格式：，等.红花木3个实生变异株系表型与光合特性的比较分析[J].湖南农业科学，2025（5）：85-90.DOI：10.16498/j.cnki.hnnykx.2025.005.016

Abstract：ToexploretheecologicaladaptabilityandhorticulturalapplicationsofdiferentvariantsofLoropetalumchinnsevar. rubrum，thisstudycomparedthephenotypesoffowersandleaves，anatomicalstructureofleaves，pigmentcontent，andcloophl fluorescence parametersof'Zaohua1'（Z1），'Shixuan 3'（S3），and'Dahual'（D1）.Theresultsaredescribedas follows.（l）The phenotypesofleavesandflowers variedamong thethreevariants.Specifically，S3adyellowishgreen young leaves，dark green mature leaves，andreamywhitefowers;Z1adpurplishredyoungleaves，brownish-redmatureleaves，androseredfowers;Dl hadthelargestfowersandleavespuplish-redyoungleaves，dark greenmatureleaves，ndlargerose-redfowers.（2）Thestoatal longitudinal diameter and stomatal area of the three variants followed the trend of D1>Z1>S3 ；thestomatal transverse diameter and stomatal circumference were in the descending order of D1>S3>Z1 ; the leaf thickness followed the order of D1>S3>Z1 .（3）The contentofchlorophyllinleavesdidnotvarysignificantlyamongthetreevariants，whileZandDadsignifcantlyhgherontent ofcarotenoidsandanthocyanins than S3.（4）Theoriginalfuorescence，maximumfluorescence，andvariablefluorescencewerethe highestinZ1，moderate inS3，andthelwestinD1.Whentheyarestable，Z1hadthehighestnon-photochemicalquenching，andD1 hadthehighestphotochemicalquenhing.Takentogether，Dshowcasessignificantseasonalchanges，goodomamentalvalue，nd stronglightprotetionabilityeingstableforsolitaryplantingatlandscapenodes;Zasothexcelentlighteergyuilatio capacityandstresesistance，ervingasacanddateforplantinginsunyenviroments;Swithweakligtprotetionabltdor photosynthetic performance should be cultivated in the environment without strong light.

Key words： Loropetalum chinense var.rubrum; seedling variants;phenotypesof flowers and leaves;photosynthetic pigments;chlorophyllfluorescencecharacteristics

红花木（Loropetalumchinensevar.rubrumYieh），又称红桎木，是金缕梅科繼木属变种植物。（剩余7103字）