A Survey and Research on Population Phenotypic Diversity Dendrobium densiflorum in Hainan Island
The germplasm resources of Dendrobium densiflorum in Hainan Island were investigated and col-lected by literature review and fieldwork.Consequently,using ten collected population materials,we investigat-ed the phenotypic diversity of 12 characters under Coefficient of Variation,Principal Component Analysis(PCA),Correlation Analysis,and Cluster Analysis.The results revealed that:(1)The average Coefficient of Variation of the 12 phenotypic traits,which was higher at inter-population than intra-population,varied be-tween 4.5％and 25％;(2)PCA presented that inflorescence length,stem diameter,and labellum length were the main phenotypic variations;(3)Pearson Correlation Analysis showed that the number of small flowers cor-related mostly with labellum length,at 0.0807;(4)Q-type Cluster Analysis revealed that at the Euclidean Dis-tance of 20,he collected materials could be categorized into two groups.This result provides data reference for variety breeding and protection and utilization of D.densiflorum.
Hainan IslandDendrobium densiflorumProtection and utilizationPopulationPhenotypic di-versity
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NSTL
万方数据
