三角梅叶色嵌合体表型观察及分析  

Phenotypic observation and analysis of leaf color chimeras in Bougainvillea

作　　者：刘春琪 林鸿伟 杜学林 黄海茵 刘超 王凤兰[1,3] LIU Chunqi;LIN Hongwei;DU Xuelin;HUANG Haiyin;LIU Chao;WANG Fenglan(College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;Guangzhou Institute of Forestry and Landscape Architecture,Guangzhou 510405,China;Zhonghua Modern Agriculture Research Institute,Huadu District,Guangzhou,510800,China)

机构地区：[1]仲恺农业工程学院园艺园林学院,广东广州510225 [2]广州市林业和园林科学研究院,广东广州510405 [3]广州市花都区仲花现代农业研究院,广东广州510800

出　　处：《仲恺农业工程学院学报》2023年第4期13-18,31,共7页Journal of Zhongkai University of Agriculture and Engineering

基　　金：广州市基础研究计划基础与应用基础研究项目(202201011833);广东省现代农业产业技术体系花卉创新团队项目(2023KJ121)。

摘　　要：以广州市区域内部分苗圃的三角梅(Bougainvillea Comm.ex Juss.)叶色嵌合体为调查对象,观察形态特点;通过筛选不同类型的嵌合植株为试材,以正常叶色植株为对照组,测定并分析其叶绿素SPAD值、光合色素相对含量,研究三角梅属植物叶色嵌合特点及光合色素含量差异.结果表明:广州市区域内常见的三角梅叶色嵌合体共有51种,嵌合体表型可分成3大类:绿心黄边、黄心绿边以及混合型,且不同品种的嵌合体存在颜色差异;嵌合体植株叶片从绿色区域到黄色区域,叶绿素SPAD值不断下降,黄色区域仍有极低含量叶绿素;各光合色素含量均显著降低,而类胡萝卜素/总叶绿素比值则均高于绿色区域,说明嵌合部位呈现黄色与类胡萝卜素/总叶绿素比值升高有一定的相关性.The leaf color chimeras of Bougainvillea Comm.ex Juss.in some nurseries in Guangzhou were investigated to observe the morphological characteristics.By screening different types of chimeric plants as test materials and plants with normal leaf color as the control group,the chlorophyll SPAD value and the relative content of photosynthetic pigments were measured and analyzed to study the chimeric characteristics of leaf color and the differences in photosynthetic pigment content of B.Comm.ex Juss.The results showed that there were 51 kinds of B.Comm.ex Juss.leaf color chimeras common in Guangzhou,and the chimeric phenotypes could be divided into 3 categories:green heart with yellow edge,yellow heart with green edge and mixed type.The chimeras of different varieties had differences in color.The chlorophyll SPAD value of the leaves of chimeric plants decreased continuously from the green area to the yellow area,and there was still a very low content of chlorophyll in the yellowing area.The content of each photosynthetic pigment in the yellow area decreased significantly,while the ratio of carotenoid to total chlorophyll was higher than that of the green area,indicating that there was a certain correlation between the yellow color of the chimeric part and the increase of the ratio of carotenoid to total chlorophyll.

关 键 词：三角梅(Bougainvillea Comm.ex Juss.) 叶色嵌合 表观 光合色素 

分 类 号：S609[农业科学—园艺学]