摘要
依据菊花DUS测试指南中性状观测和分级的方法,记录了菊属、亚菊属31个物种叶片和花序的8个定性多态性状,测量了各物种叶片的14个形态指标,并将其转换为7个数量多态性状,分别基于定性多态性状代码和叶片数量多态性状数值利用聚类分析研究其亲缘关系,将2次聚类结果进行比较。结果表明,基于定性多态性状和叶片数量多态性状的聚类结果均可对菊花近缘属植物进行亲缘关系分析,并与前人利用分子标记的亲缘关系研究及植物学传统分类的研究结果一致,能够较准确地反映种间亲缘关系。而利用菊花DUS测试相关定性多态性状的信息进行亲缘关系研究,具有准确度高、采样简便、工作量小的优点。
Eight morphological characteristics of 31 Chrysanthemum and Ajania leaf and inflorescence were re- corded based on the characteristics evaluation and classification in DUS test guidelines. Depend on the characteris- tics codes and 7 quantitative characters calculated from 14 foliar morphological traits,the phylogenetic relationship of these species were respectively analyzed through clustering analysis. Comparing the two clustering analysis re- sults, we found that the results from multivariate morphological traits and multiple quantitative traits from leaf could accurately reflect phylogenetic relationship of species from Chrysanthemum and its related genera. In addition,such results were consistent with those in previous studies with the methods of molecular markers and traditional morpho- logical classification. However, clustering analysis using DUS test related multivariate morphological characteristics was more effective and had the advantages of higher accuracy, easier sampling, and less labor.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2013年第6期1031-1037,共7页
Journal of Plant Genetic Resources
基金
教育部新世纪优秀人才支持计划项目(NCET-10-0492)
国家自然科学基金项目(31171983)
南京农业大学基本业务费自主创新重点项目(KYZ201112)
关键词
菊属
定性多态性状
数量性状
聚类
亲缘关系
DUS测试
Chrysanthemum
multivariate morphological characteristics
cluster
phylogenetic relationship DUS test
