Phenotypic Diversity of Natural Populations of Rosa laxa Retz. in Tianshan Mountains of Xinjiang

ACTA HORTICULTURAE SINICA ›› 2011, Vol. 38 ›› Issue (3): 495-502.

• Ornamental Plants • Previous Articles Next Articles

Phenotypic Diversity of Natural Populations of Rosa laxa Retz. in Tianshan Mountains of Xinjiang

GUO Ning，YANG Shu-hua，GE Wei-ya，and GE Hong*

Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081，China

Received:2010-06-23 Revised:2011-02-21 Online:2011-03-25 Published:2011-03-25
Contact: GE Hong*

Abstract

Abstract: Six natural populations of Rosa laxa Retz. in Tianshan mountains of Xinjiang were selected to analyze the phenotypic diversity based on 14 phenotypic traits from leaves，flowers，fruits and seeds. The results showed that there were significant differences in the phenotypic traits among populations and among individuals within populations. The mean phenotypic differentiation coefficient（VST）of the 13 morphological traits among populations was 41.84%，which indicating the comparatively abundant phenotypic diversity among or within populations. The average variation coefficient（CV）of phenotype traits was 22.79% showing the high variation of the phenotypic traits. Duncan’s test of CV and the principal component analysis of phenotypic traits both indicated that the traits on inflorescences and seeds were the main factors account for the phenotypic variations. According to the UPGMA cluster analysis，the populations of Rosa laxa in this study could be divided into three groups. These cluster results were not due to geographic distances.

Key words: Rosa laxa, population, phenotypic diversity, Xinjiang

CLC Number:

S 685.12

GUO Ning;YANG Shu-hua;GE Wei-ya;and GE Hong. Phenotypic Diversity of Natural Populations of Rosa laxa Retz. in Tianshan Mountains of Xinjiang[J]. ACTA HORTICULTURAE SINICA, 2011, 38(3): 495-502.

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Phenotypic Diversity of Natural Populations of Rosa laxa Retz. in Tianshan Mountains of Xinjiang

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