摘要
[目的]通过对川西地区毛叶木姜子的表型性状调查,研究其表型变异程度和变异规律,探讨毛叶木姜子的表型特征,为川西地区毛叶木姜子种质资源的保存和利用、良种选育提供科学依据。[方法]在川西地区随机选取具有代表性的56株毛叶木姜子实生单株,对果实、叶片、种子等13个表型性状进行系统比较分析,采用变异系数、方差分析、相关分析、主成分分析等方法,探讨川西地区毛叶木姜子表型多样性。[结果](1)从变异系数和方差分析结果来看,试验区内毛叶木姜子表型性状间存在丰富的变异,且变异幅度大。其中,果实百粒质量的变异系数最大,为15.93%;果形指数的变异系数最小,为2.31%。(2)在相关分析中,各性状间不同程度地存在着极显著或显著的差异。(3)主成分分析显示,果实纵径、果实横径、果实百粒质量、种子纵径、种子横径、种子百粒质量是影响毛叶木姜子表型多样性的主导因子。[结论]毛叶木姜子表型性状变异丰富、变异程度各不相同;表型性状间具有协调发育的特点;果实纵径等6个性状是影响其表型多样性的主导因子。
Objective In order to provide some references for Litsea mollis Hemsl germplasm resource＇ s preservation, utilization and selection, the phenotypic traits of L. mollis in West Sichuan Province were investigated to understand the phenotypic variation degree and variation regularity. Method 56 L. mollis, individuals in West Sichuan Province were randomly selected. 13 phenotypic traits, such as the fruits, leaves, and seeds, were compared and analyzed. The variable coefficient, variance analysis, correlation analysis and principal components analysis were used to explore the phenotypic polymorphism of L. mollis in West Sichuan Province. Result The results are as follows. （ 1 ） The variation coefficient analysis and variance analysis showed that the phenotypie traits of L. mollis existed rich genetic differences, and had great variation in test area. Among them, the variation coefficient of 100 fruit weight was the maximum （15. 93% ）; the variation coefficient of fruit shape index was the minimum （2.31%）. （2） In correlation analysis, there existed highly significant difference or significant difference among traits. （3） The principle component analysis showed that fruit longitudinal diameter, fruit equatorial diameter, 100 fruit weight, seed longitudinal diameter, seed equatorial diameter, 100 seed weight were the dominant factors influencing the phenotypic polymorphism of L. mollis. Conclusion The phenotypic traits of L. mollis exisled rich genetic differences, and had great variation in test area. Epharmony exist among the phenotypic traits. 6 phenotypic traits as fruit longitudinal diameter were the dominant factors influencing the phenotypic polymorphism of L. mollis.
出处
《林业科学研究》
CSCD
北大核心
2015年第6期844-850,共7页
Forest Research
基金
国家星火计划项目(2014GA810004)
国家科技部科技型中小企业技术创新基金项目(14C26215102921)
关键词
川西地区
毛叶木姜子
表型多样性
West Sichuan Province
Litsea mollis
phenotypic polymorphism
