六种兜兰属植物的叶面积和叶幅与开花的关系  

Correlation Between Leaf Area,Leaf Span and Flowering of Six Species of Paphiopedilum

作　　者：李雪[1] 严宁[2] 康志钰[1] 

机构地区：[1]云南农业大学农学与生物技术学院,云南昆明650201 [2]中国科学院昆明植物研究所,云南昆明650204

出　　处：《北方园艺》2011年第3期63-67,共5页Northern Horticulture

基　　金：云南省社会发展科技计划资助项目(2009CD116)

摘　　要：测定了硬叶兜兰、杏黄兜兰、麻栗坡兜兰、长瓣兜兰、红旗兜兰及根茎兜兰6种兜兰的开花植株和非开花植株的叶片数、叶面积、叶幅及花器官大小等形态性状,利用Logistic模型分析了叶片数、叶面积及叶幅与开花与否的关系。结果表明:6种兜兰个体是否开花与叶面积和叶幅都有极显著的相关性,经回归方程计算,硬叶兜兰、杏黄兜兰、麻栗坡兜兰、长瓣兜兰、红旗兜兰及根茎兜兰开花的叶面积阈值(P=50%)需要达到48.88、75.55、141.75、243.42、49.02、151.94cm^2;而叶幅阈值则要达到15.87、15.76、21.51、36.85、17.99、39.06cm,表明兜兰属植物植株个体的叶面积或叶幅要达到一定大小才可以进入生殖生长。利用叶面积大小及叶幅与开花显著相关的指标,可以判定兜兰植株是否完成幼年期进入成熟期。此外,杏黄兜兰、麻栗坡兜兰、长瓣兜兰的开花与否与叶片数也有显著的相关性,叶片数也可以成为指示是否可能开花的指标。The number of leaves,leaf area,leaf span,floral organ size and other morphological traits of six Paphiopedilum species（P.micranthum,P.armeniacum,P.malipoense,P.dianthum,P.charlesworthii,P.rhizomatosum） were determined between flowering plants and non flowering plants.The results showed that by Logistic model significant correlations both has been obversed in leaf area and leaf span with flowering.By using regression equation, six species of Paphiopedilum hadn＇t flowered until their leaf area threshold（P=50%） reached to 48.88,75.55,141.75, 243.42,49.02,151.94 cm2,and the leaf span reached to 15.87,15.76,21.51,36.85,17.99,39.06 cm,which showed that plant leaf area or leaf span of individual of Paphiopedilum.needed to reach a certain size before they could enter the reproductive growth.The Paphiopedilum grown from infancy into maturity could be judged by leaf area and leaf span which had significant correlations with flowering.In addition,the numbers of leaves of P.armeniacum,P.malipoense, P.dianthum had significant correlations with flowering,thus it could bee seen the number of leaves also was a possible indicator of flowering.While the correlation between leaf area and size of floral organ was uncertain.

关 键 词：兜兰属 开花概率 叶面积和叶幅 

分 类 号：S682.31[农业科学—观赏园艺]