遮光处理下2个红花木品种的光合特性比较

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引用格式：.遮光处理下2个红花檻木品种的光合特性比较[J].湖南农业科学，2025（5）：91-97.DOI：10.16498/j.cnki.hnnykx.2025.005.017

Abstract：Thisstudyaims toinvestigatetheregulatoryefectsofshadingonthephotosyntheticcharacteristicsofLoropetalum chinensevar.rubrum.TwoL.chinensevar.rubrum varieties，XiangnongFendai'andBlackPear'，weretreatedunderfiveading gradients： 0% 30% 50% 70% ，and 90% .The photosynthetic parameters，chlorophyllfluorescence characteristics，and photosynthetic pigmentontentweresystematicallcompared.TheresultsshowedthatshadinghancedthepotentialphotochemicalactivityofP， netphotosytheticatestomatalonductane，andtranspirationrateofthetwvarieties.XiangnongFendai'asmorsesititolight changes，whileBlackPearl'showedstrongeradaptabilitytoghshadingenvironments.Inadition，shadingsigifcantlyceased thecontentofcloropyllachlorophyllbandcarotenoidsinthetwovarieties.Withtheextensionofsadingtie，aighshading rate （50%-90%） wasconducive to chlorophylla accumulation.Inconclusion，shading significantly improves the photosynthetic performanceofXiangnongFendaiadBlackPear'，andthecomprehensivephotosyntheticperformancesoftetwoaietiesuder differentsadingcondonsvaryItissggestedtatadiferentiatedshadingstrategysouldbadoptedintecultivationofL.inense var. rubrum based on variety characteristics.

Key words：Loropetalum chinensevar.rubrum;shading treatment; photosyntheticcharacteristics;photosynthetic pigments; chlorophyllfluorescence parameters

红花木（Loropetalumchinensevar.rubrumYieh），又称红继木，因叶色艳丽、花形独特、花期长和适应性强等特点被广泛应用于园艺及景观设计。（剩余8208字）