浦城丹桂冠型因子与叶片性状的相关性分析  

Correlation Bnalysis between Leaf Traits and Crown Factors of Osmanthus fragrans,‘Pucheng Dan’Based on Stepwise Regression

作　　者：杜云爽 胡金涛 陈佳 吴承祯 李键[1] DU Yunshuang;HU Jintao;CHEN Jia;WU Chengzhen;LI Jian(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002;School of Ecology and Resource Engineering,Wuyi University,Wuyishan,Fujian 354300)

机构地区：[1]福建农林大学林学院,福建福州350002 [2]武夷学院生态与资源工程学院,福建武夷山354300

出　　处：《武夷学院学报》2024年第6期15-21,共7页Journal of Wuyi University

基　　金：福建农林大学林学高峰学科建设项目(71201800705)。

摘　　要：运用单因素方差分析、Pearson相关性分析、冗余分析和多元线性回归法对浦城丹桂(Osmanthus fragrans,‘Pucheng Dan’)叶片功能性状指标与冠型因子的相关性进行研究。结果表明:着枝角和分枝率是与叶片功能性状相关性较强的两种冠型因子。着枝角与叶长、叶宽、叶厚、叶面积、叶周长、叶干重和叶鲜重都表现出正相关;分枝率和下级枝数量都与叶长、叶宽、叶面积、叶干重和叶鲜重表现出负相关。树冠圆满度与枝条长度的提高有助于叶片生长,胸径与比叶面积呈负相关,其他冠型因子与叶片功能性状相关性较小。结果表明:浦城丹桂叶片性状受枝条分布情况的影响,一级枝着枝角、下级枝数量与分枝率是与叶片相关性较强的冠型因子,研究结果可为优化浦城丹桂冠型结构提供依据和参考。The correlation between leaf functional traits and stem factors of Osmanthus fragrans,‘Pucheng Dan’was analyzed by one-way ANOVA,Pearson correlation analysis,redundancy analysis,and multiple linear regression.The results showed that branch angle and branching rate were two factors that had a strong correlation with leaf functional traits.Branch angle was positively correlated with leaf length,leaf width,leaf thickness,leaf area,leaf circumference,leaf dry weight,and leaf wet weight.Branching rate and the number of branches were negatively correlated with leaf length,leaf width,leaf area,leaf dry weight,and leaf wet weight.The improvement of crown completeness and branch length was beneficial to leaf growth,DBH was negatively correlated with specific leaf area,and other branch factors had little correlation with leaf functional traits.The results indicated that the leaf traits of Osmanthus fragrans,‘Pucheng Dan’were affected by the distribution of branches,and the branch angle,the number of branches,and the branching rate were the branch factors strongly correlated with leaves.The research results can provide basis and reference for optimizing the crown structure of Osmanthus fragrans,‘Pucheng Dan’.

关 键 词：浦城丹桂 比叶面积 冗余分析 功能性状 多元线性回归 

分 类 号：Q945.45[生物学—植物学]