热带作物学报2017，Vol.38Issue(6)：990-997,8.DOI:10.3969/j.issn.1000-2561.2017.06.002
澳洲坚果种质资源叶片表型多样性分析及其数量分类研究
Leaf Character Diversity Analysis and Numerical Classification of Macadamia spp.Germplasm Resources
摘要
Abstract
The phenotypic genetic diversity of the leaf from 86 macadamia germplasm resources was analyzed,and the numerical classification was studied based on the diversity.The results showed that the average variation type among 8 described characters was up to 3.8,and the color of the young leaf and the shape of leaf had the most variation with coefficient 5.Among 4 numerical characters,the length of leaf petiolar was the largest and the coefficient of variation was 23.33％,and the smallest coefficient of variation of the leaf width was 13.59％.The result of Q cluster analysis based on 12 leaf phenotypic characters demonstrated that the 86 macadamia germplasm resources were divided into two groups at the Euclidean distance of 6.85,i.e.,M.integrifolia and M.integrifolia/M,tetraphylla Hybrids.The result of R cluster analysis showed that 12 phenotypic characters related were significantly clustered into four groups at coefficient of 1.16.12 phenotypic characters were mainly composed of 5 independent principal components,explained 71.120 9％ of total variance,and principal component analysis more directly demonstrated the characteristics of leaf phenotypic characters.The results were basically consistent with that of the cluster analysis.Therefore,the phenotypic genetic diversity of the leaf was abundant in macadamia germplasm resources.The leaf arrangement,leaf margin sting,the length of leaf petiole,the color of young leaf,the shape of leaf apex,the shape of leaf margin and leaf shape index played an important role in the numerical classification.Based on the diversity of leaf phenotypic characters,numerical classification had a certain applied value for building the classification system of macadamia germplasm resources.关键词
澳洲坚果/种质资源/叶片/表型性状/多样性/数量分类Key words
Macadamia spp./germplasm resources/leaf/phenotypic characters/diversity/numerical classification分类
农业科技引用本文复制引用
万继锋,杨为海,曾辉,邹明宏,张汉周,陆超忠..澳洲坚果种质资源叶片表型多样性分析及其数量分类研究[J].热带作物学报,2017,38(6):990-997,8.基金项目
中央级公益性科研院所基本科研业务费专项(No.1630062016001,1630062017012,1630062017028) （No.1630062016001,1630062017012,1630062017028）
农业部热作技术试验示范项目(No.15162130106232002) （No.15162130106232002）
广东省湛江市科技计划项目(No.2015A06005) （No.2015A06005）
贵州省科技计划项目(黔科合NY [2014] 3026号). （黔科合NY [2014] 3026号）
