西南林业大学学报2025，Vol.45Issue(11)：45-51,7.DOI:10.11929/j.swfu.202411032
热带地区3种油茶叶片解剖及光合生理特性比较
Comparative Study on Leaf Anatomy and Photosynthetic Characteristics of 3 Tropical Tea-oil Camellia
摘要
Abstract
The study was conducted to compare and analyse the anatomical structure and photosynthetic physiological parameters of the leaves of Camellia hainanica,C.osmantha and C.vietnamensis by physiological measurements and cytological methods.The results showed that leaves were the thickest,with well-developed spongy tissue,the largest stomata and the highest stomatal density,and its chlorophyll content was significantly higher than the other 2.The net photosynthetic rate(Pn)of the three tea-oil Camellia was C.hainanica＞C.vietna-mensis＞C.osmantha.According to the fitting results of the photosynthetic response curve,C.hainanica has a high light saturation point(LSP),a low light compensation point(LCP),and a dark respiration rate(Rd),showing strong tropical adaptation.C.vietnamensis has tighter leaves with high utilisation of bright light.The leaves of C.osmantha were the thinnest,with PS Ⅱ primary light conversion efficiency(Fv/Fm),actual photochemical effi-ciency(ΦPSⅡ),transpiration rate(Tr)and stomatal conductance(Gs)significantly lower than those of the other 2,which were less adapted to the tropics.关键词
油茶/叶片/解剖结构/光合特性/热带地区Key words
tea-oil Camellia/leaf/anatomical structure/photosynthetic characteristic/tropical area of China分类
农业科技引用本文复制引用
Gong Han,Wang Linkai,Liu Yanju,Xu Yufen,Yu Zhaoyan,Wu Kunlin,Cao Qiulin,Jia Xiaocheng..热带地区3种油茶叶片解剖及光合生理特性比较[J].西南林业大学学报,2025,45(11):45-51,7.基金项目
中央财政林业科技推广示范资金项目(琼[2021]TG04)资助 （琼[2021]TG04）
海南省重点研发专项项目(ZDYF2023XDNY054)资助. （ZDYF2023XDNY054）
