广西植物2024，Vol.44Issue(9)：1785-1794,10.DOI:10.11931/guihaia.gxzw202312053
基于解剖学的花叶类玉兰光合特性研究
Photosynthetic characteristics of Yulania denudata with variegated leaf based on anatomy
摘要
Abstract
To reveal the causes of photosynthetic characteristics of Yulania denudata with variegated leaf,the green leaves,variegated leaves and yellow leaves of Y.denudata with variegated leaf were used as experimental materials.The anatomical structure and photosynthetic characteristics in three types of leaves were compared from the aspects of photosynthetic pigment content,leaf anatomical structure and light response curve.The results were as follows:(1)The yellow leaf spots of Y.denudata with variegated leaf were chlorophyll-type leaf spots formed by the decrease of chlorophyll content due to the abnormal structure of chloroplasts.(2)The structure of thylakoids in the yellow region of Y.denudata with variegated leaf was abnormal,and ATP synthesis was blocked,which hindered the progress of photosynthesis.(3)The anatomical structure showed that the palisade tissue of the green leaf was developed,the chloroplast integrity and pigment content were higher than those of the variegated leaf and the yellow leaf,and the net photosynthetic rate was higher.(4)There were significant differences in the maximum net photosynthetic rate and light saturation point between the green leaf and the variegated leaf,and the green leaf could withstand a wider range of bright light than the variegated leaf.This study further elucidates that the chloroplast structure of Y.denudata with variegated leaf affects its photosynthetic characteristics,and provides a reference for the breeding of excellent germplasm of Y.denudata with variegated leaf.关键词
光合色素/解剖结构/叶绿体结构/光合特性/相关性分析Key words
photosynthetic pigment/anatomical structure/chloroplast structure/photosynthetic characteristics/correlation analysis分类
农业科技引用本文复制引用
朱凯立,叶康,宋希强,秦俊,邵文,胡永红..基于解剖学的花叶类玉兰光合特性研究[J].广西植物,2024,44(9):1785-1794,10.基金项目
上海市农委科技兴农项目[沪农科推字(2019)第1-8号] （2019）
国家林业和草原局野生动植物保护司野生植物保护管理项目(2019073041) （2019073041）
上海市科委科技创新行动计划项目(19DZ1203500) （19DZ1203500）
上海市绿化和市容管理局科技项目(G212409). （G212409）
