西南林业大学学报2025，Vol.45Issue(11)：32-37,6.DOI:10.11929/j.swfu.202411015
乐昌含笑无性系叶片性状变异研究
Study on the Leaf Trait Variation of Michelia chapensis Clones
摘要
Abstract
The morphological traits including leaf area,circumference,length,width,length to width ratio,roundness,rectangularity,and chlorophyll content on mature leaves of 109 Michelia chapensis clones grafted and preserved which from 20 districts in 5 provinces including Guangdong,Guangxi,Hunan,Jiangxi,and Guizhou,were measured and analyzed at the National Forest Germplasm of Magnoliaceae,located within Longshan Forest Farm in Lechang City,part of Shaoguan City in Guangdong.The results showed that there were abundant vari-ations in leaf traits of M.chapensis clones,and the coefficient of variation of these traits ranges from 3.84％to 27.98％,and the repeatability of all traits is higher than 0.70,indicating that the leaf traits of M.chapensis clones were strongly regulated by genetic factors.Additionally,the correlation results of leaf traits indicate that there were a significant correlation between each traits,and there exist a deeply significant positive correlation(P＜0.01)among 4 traits of leaf area,circumference,length,and width.In addition,8 leaf traits were transformed into 3 principal components through principal component analysis,and the cumulative contribution rate of 87.373％,reflecting the vast majority of variation information about leaf traits of M.chapensis clones.Moreover,based on the variation data of leaf traits,cluster analysis was conducted to classify 109 M.chapensis clones into 4 major groups(Ⅰ-Ⅳ).Furthermore,there were significant differentiation in leaf traits among groups,each with different characteristics.关键词
乐昌含笑/无性系/叶片/性状变异Key words
Michelia chapensis/clone/leaf/trait variation分类
农业科技引用本文复制引用
He Jiamin,Wei Ruping,Wang Runhui,Huang Rong,Yan Shu,Wu Guandi,Zheng Huiquan..乐昌含笑无性系叶片性状变异研究[J].西南林业大学学报,2025,45(11):32-37,6.基金项目
广州市科技计划项目(2023A04J0840)资助 （2023A04J0840）
广东省林业科技创新项目(2022KJCX010)资助. （2022KJCX010）
