无患子实生群体种实表型性状变异研究  

Study on variation in phenotypic traits of fruit and seed of Sapindus mukorossi in seedling plantation

作　　者：刁松锋[1] 邵文豪[1] 姜景民[1] 董汝湘[1] 孙洪刚[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江杭州311400

出　　处：《西北农林科技大学学报（自然科学版）》2014年第5期75-83,共9页Journal of Northwest A&F University(Natural Science Edition)

基　　金：浙江省重大科技专项重点农业项目(2011C12015);国家林业公益性行业科研专项(200804032)

摘　　要：【目的】阐明无患子（Sapindus mukorossi Gaertn.）种实表型性状间的关系及其变异规律。【方法】从浙江省天台县8年生无患子实生林分中,选择102棵无患子单株,连续2年观测102棵单株的15个种实性状,并对观测数据进行聚类、相关性和主成分等分析。【结果】102棵无患子的15个表型性状的遗传变异系数为4.91%~65.67%;基于15个种实性状划分的6个群组间性状差异明显,可为营建不同用途的无患子林提供基本材料;果实质量、单株产量、果皮皂苷含量和种仁油脂含量是无患子4个重要的经济性状,4个性状与其他性状有着不同程度的相关关系;表征产量、种实化学成分和种实形态因子的4个主成分累积方差贡献率为81.790%,其反映的信息与基于15个性状的聚类分析、相关分析结果基本一致。【结论】无患子实生群体表型变异丰富,这些多层次变异为不同利用目标的良种初选奠定了基础。[Objective] This study aimed to elucidate the relation and the variation in phenotypic traits of fruit and seed of Sapindus mukorossi. [Method] 102 S. mukorossi plants were selected from the seedling plantation of 8-year-old S. mukorossi in Tiantai County,Zhejiang Province. 15 traits of the 102 trees were observed from 2011 to 2012 ,and clustering analysis, correlation analysis and principal component analyses were conducted. [Result] The variation coefficients of the 15 phenotypic traits for the 102 S. mukorossi ac- cessions were 4.91%--65.67 %. Significant differences in phenotypic traits of six groups divided based on the traits were identified, which provided basic information for accessions with different purposes. Fruit weight,yield per plant, saponin contents in the peep and oil contents in the kernel were the four important economic traits and they had different correlations with other traits. The cumulated variance contribution of the four principal components of characterization yield, fruit and seed chemical composition and types of fruit and seed form factor was 81. 790% ,which was consistent with the results of principal component ana- lyses,clustering analysis and correlation analysis. [Conclusion] Phenotypic variation of S. rnukorossi was rich and the variations provide information for the preliminary selection and breeding of seeds for different purposes.

关 键 词：无患子 实生群体 种实 表型性状 变异规律 

分 类 号：S794.901[农业科学—林木遗传育种]