Phenotypic Diversity of Natural Populations of Paeonia delavayi
In order to reveal the variation degree and variation pattern of phenotypic in Paeonia delavayi,31 phenotypic traits of 9 natural populations were investigated.The results showed that:the coefficient of variation (c.v.) of 31 phenotypic traits ranged from 3.22 ％ to 76.12 ％,and the average c.v.between populations was 25.24 ％.Those results showed that Paeonia delavayi had high variation degree of the phenotypic traits.NPH and LWS populations had the maximum and minimum c.v.among 9 populations,and the values of c.v.were 31.03 ％ and 20.11％,respectively.There were significant differences in the phenotypic variation among and within populations.The mean phenotypic differentiation coefficient was 73.62 ％,demonstrating that differentiation among populations was the major source of variation.Using UPGMA cluster analysis,9 natural populations of P.delavayi divided into 3 groups,and the phenotypic traits did not gather according to geography distance.It was necessary to conserve more populations according to the phenotypic diversity and variation pattern of P.delawayi.The integrality of populations should also be kept in order to preserve as more ornamental traits as possible for further utilization.
NETL
NSTL
万方数据
维普
