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Effects of domestication on genetic diversity in Chimonanthus praecox : Evidence from chloroplast DNA and amplified fragment length polymorphism data
Author(s) -
Lu YiJun,
Chen Chuan,
Wang RuiHong,
Egan Ashley N.,
Fu ChengXin
Publication year - 2015
Publication title -
journal of systematics and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.249
H-Index - 46
eISSN - 1759-6831
pISSN - 1674-4918
DOI - 10.1111/jse.12134
Subject(s) - amplified fragment length polymorphism , biology , domestication , chloroplast dna , genetic diversity , haplotype , upgma , botany , gene flow , genetic variation , genetics , chloroplast , genotype , gene , population , demography , sociology
Chimonanthus praecox (L.) Link is a widely cultivated endemic winter‐flowering plant in China that has a long cultivation history. Genetic diversity and genetic structure were compared between wild and cultivated groups to reveal the geographic origin of the cultivated genotypes using chloroplast DNA (cpDNA) sequences and amplified fragment length polymorphism (AFLP) markers. Nine haplotypes were identified using three combined chloroplast fragments. Based on chloroplast data, the wild group showed greater genetic variation and genetic differentiation and a lower measure of gene flow compared to the cultivated group. The AFLP markers also supported this trend. More than 40% of the cpDNA haplotypes were shared between wild and cultivated groups, with shared haplotypes originating from multiple wild populations, suggesting multiple origins of cultivated plants. Moreover, principal coordinate analysis, UPGMA, and structure analysis of AFLP markers revealed that two wild populations clustered with most of the cultivated populations of Ch. praecox , suggesting that most of the cultivated populations mainly originated from these two populations. The combined cpDNA and AFLP results indicated that modern cultivated Ch. praecox experienced multiple events of origin involving two geographic origins, eastern China (Tianmu Mountain) and southwestern China (the border of Hunan–Guangxi–Sichuan–Guizhou).