红花檵木短枝和开花缺失型变异株系的光合特性  

Photosynthetic characteristics of short-branched and flowering-deficient mutation lines of Loropetalum chinense var.rubrum

作　　者：张大毛 张霞 王香菲 刘洋 杨期宏 李卫东 于晓英[1,2,5] 李炎林 ZHANG Damao;ZHANG Xia;WANG Xiangfei;LIU Yang;YANG Qihong;LI Weidong;YU Xiaoying;LI Yanlin(College of Horticulture,Hunan Agricultural University,Changsha,Hunan 410128,China;Hunan Provincial Midsubtropical High Quality Flower and Tree Breeding and Utilization Engineering Technology Research Center,Changsha,Hunan 410128,China;Education College,Hunan Agricultural University,Changsha,Hunan 410128,China;Hunan Key Laboratory of Innovation and Comprehensive Utilization,Changsha,Hunan 410128,China;Engineering Research Center for Horticultural Crop Germplasm Creation and New Variety Breeding,Ministry of Education,Changsha,Hunan 410128,China)

机构地区：[1]湖南农业大学园艺学院,湖南长沙410128 [2]湖南省中亚热带优质花木繁育与利用工程技术研究中心,湖南长沙410128 [3]湖南农业大学教育学院,湖南长沙410128 [4]园林花卉种质创新与综合利用湖南省重点实验室,湖南长沙410128 [5]园艺作物种质创新与新品种选育工程研究中心,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2021年第2期180-184,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南省科学技术厅项目(2018TP2007、2019TP1033、206NK2100);湖南农业大学“双一流”建设科学研究培育项目(SYL201802026,SYL2019012);湖南省教育厅项目(18B124);湖南农业大学第三批重大科研项目暨创新团队培育工程(201909)。

摘　　要：测定红花檵木短枝和开花缺失型变异株系‘娇玲珑’初始荧光、最大荧光、叶绿素相对含量,分析其叶绿素荧光特性。结果表明:‘娇玲珑’的初始荧光值为8921.20,高于对照‘密枝玫红’和‘花叶檵木2号’;‘娇玲珑’的PSⅡ最大光化学量子效率值为0.763,与对照的差异极显著(P<0.01);‘娇玲珑’的叶绿素相对含量为37.88,均小于对照的。红花檵木短枝和开花缺失型变异株系叶绿素荧光特性发生了改变,对光能转化利用效率较低和叶绿素含量的减少,可能是其生长缓慢的原因,适合在弱光环境下栽培。The initial fluorescence,maximum fluorescence and chlorophyll relative content of the short-branched and flowering-deficient mutation lines of Loropetalum chinense var.rubrum‘Jiaolinglong’were measured to analyze its chlorophyll fluorescence characteristics.The results show that the initial fluorescence value of‘Jiaolinglong’was 8921.20,which was higher than that of the control the cultivars‘Mizhimeihong’and‘Huayejimu2’;PSⅡmaximum photochemical quantum efficiency of‘Jiaolinglong’was 0.763,which showed very significant difference compared to the controls(P<0.01);the relative chlorophyll content of‘Jiaolinglong’was 37.88,which was lower than that of the control materials.The short branch and flowering-deficient variants of Loropetalum chinense var.rubrum caused a significant change in its chlorophyll fluorescence characteristics including the low efficiency in the utilization of light energy conversion and the reduction of chlorophyll content,which may be important reasons for its slow growth,indicating‘Jiaolinglong’strain is suitable for low light environment cultivation.

关 键 词：红花檵木 短枝和开花缺失变异株系 叶绿素荧光特性 

分 类 号：S685.99[农业科学—观赏园艺]