Next Article in Journal
Functional Diversity of the Soil Culturable Microbial Community in Eucalyptus Plantations of Different Ages in Guangxi, South China
Next Article in Special Issue
Identification and Expression of NAC Transcription Factors of Vaccinium corymbosum L. in Response to Drought Stress
Previous Article in Journal
Variations in Soil Respiration at Different Soil Depths and Its Influencing Factors in Forest Ecosystems in the Mountainous Area of North China
Previous Article in Special Issue
Effect of Phosphinothricin on Transgenic Downy Birch (Betula pubescens Ehrh.) Containing bar or GS1 Genes
Open AccessArticle

Low Divergence Among Natural Populations of Cornus kousa subsp. chinensis Revealed by ISSR Markers

by Jia-Qiu Yuan 1,2, Qin Fang 1,2, Guo-Hua Liu 3 and Xiang-Xiang Fu 1,2,*
1
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
2
College of Forestry, Nanjing Forestry University, Nanjing 210037, China
3
College of Forestry, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, China
*
Author to whom correspondence should be addressed.
Forests 2019, 10(12), 1082; https://doi.org/10.3390/f10121082
Received: 17 October 2019 / Revised: 21 November 2019 / Accepted: 22 November 2019 / Published: 28 November 2019
(This article belongs to the Special Issue Forest Genetics and Tree Improvement)
Research Highlights: Taking Chinese dogwood (Cornus kousa subsp. chinensis) as an example, the genetic characteristics of natural populations collected from main a distribution area were evaluated using intersimple sequence repeat (ISSR) markers to reveal the genetic basis for further selection and breeding. Background and Objectives: Chinese dogwood is a small understory tree that is widely distributed in China. Chinese dogwood has attracted interest for its potential horticultural and ornamental values, and its natural resource potential urgently needs to be estimated. Materials and Methods: In this study, the genetic diversity of 12 natural populations collected from six provinces containing 223 individuals was evaluated based on ISSR markers. Results: Relatively high levels of genetic diversity were found at both the population and individual levels. The Shannon’s diversity index (I) among individuals (0.504) was higher than that among populations (0.338). Analysis of molecular variance (AMOVA) revealed that genetic variation mainly existed within populations (61.55%) rather than among populations (38.45%). According to the STRUCTURE analysis, 12 populations were assigned to two groups, i.e., the northern and southern ecological regions, which are separated by the Yangtze River. A Mantel test analysis showed that there was no significant correlation between genetic distance and geographic distance. Conclusions: Considering the breeding system of dogwoods, we speculated that the genetic characteristics of the natural populations of this species would be affected by the dispersal mode of its pollens and seeds; additionally, genetic drift could play an important role in its genetic differentiation. In conclusion, in situ conservation is recommended for Chinese dogwood based on our results. View Full-Text
Keywords: Chinese dogwood (Cornus kousa subsp. chinensis); ISSR; genetic diversity; genetic variation; population structure Chinese dogwood (Cornus kousa subsp. chinensis); ISSR; genetic diversity; genetic variation; population structure
Show Figures

Figure 1

MDPI and ACS Style

Yuan, J.-Q.; Fang, Q.; Liu, G.-H.; Fu, X.-X. Low Divergence Among Natural Populations of Cornus kousa subsp. chinensis Revealed by ISSR Markers. Forests 2019, 10, 1082.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop