PJB-2022-33
A study on the phenotypic diversity of Sinopodophyllum hexandrum (Royle) Ying
Zheng Zhang, Zhengyang Yao, Qingqing Ma, Junmei Liu, Yanxia Liu, Weihua Liang, Tong Zhang, Dongxue Yin, Wei Liu and Qi Qiao
Abstract
Genetic diversity is a basic component of biological diversity, and phenotypic diversity is an important research direction of genetic diversity. The variation in phenotypic traits often has important implications for environmental adaptation and evolution, contributing to an understanding of the ways, mechanisms, and influencing factors of biological adaptation and biological evolution. In this study, the traits of leaves, flowers, fruits, and plant height of Sinopodophyllum hexandrum (Royle) Ying from different natural distribution regions were measured and analyzed to investigate its phenotypic diversity, which provided a theoretical basis for the analysis of genetic diversity, the protection of germplasm resources, the breeding of improved varieties, and the innovative development and utilization of S. hexandrum. By the phenotypic diversity investigation of 30 characters of 160 S. hexandrum from eight different regions, the results indicated that the phenotypic variation of S. hexandrum was extremely rich, and most traits had wide variation and significant differences among populations (among surveyed regions) and within populations (within surveyed regions). The coefficient of variation (CV) of 30 phenotypic traits in S. hexandrum ranged from 7.98% (LTW) to 31.90% (LTW/LL), with an average of 12.22%. The phenotypic differentiation coefficient (VST) ranged from 0.045% (LSe/WSe) to 61.305% (WPe), with an average of 17.776%. The degree of phenotypic differentiation was in this sequence as plant height (25.827%)> floral organs (19.376%)> fruiting organs (16.248%)> leaf organs (14.914%), indicating that the degree of differentiation of phenotypic traits in reproductive organs was higher than that in vegetative organs, and the phenotypic stability of reproductive organs was poor. The degree of variation among different morphological characteristics of S. hexandrum was quite different, but it showed a certain regularity, viz. the differentiation among individuals within surveyed regions was greater than that among surveyed regions, and the stability of the phenotypic traits of individuals within surveyed regions was worse than that among surveyed regions
To Cite this article:
Zhang, Z., Z. Yao, Q. Ma, J. Liu, Y. Liu, W. Liang, T. Zhang, D. Yin, W. Liu and Q. Qiao. 2022. A study on the phenotypic diversity of Sinopodophyllum hexandrum (Royle) Ying. Pak. J. Bot., 54(6): DOI: http://dx.doi.org/10.30848/PJB2022-6(29)
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