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Author Li, Pirui ♦ Zhang, Fei ♦ Chen, Sumei ♦ Jiang, Jiafu ♦ Wang, Haibin ♦ Su, Jiangshuo ♦ Fang, Weimin ♦ Guan, Zhiyong ♦ Chen, Fadi
Source SpringerLink
Content type Text
Publisher Springer Berlin Heidelberg
File Format PDF
Copyright Year ©2016
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology
Subject Keyword Chrysanthemum ♦ Population structure ♦ Linkage disequilibrium ♦ Association analysis ♦ Molecular marker ♦ Cell Biology ♦ Biochemistry ♦ Microbial Genetics and Genomics ♦ Plant Genetics & Genomics ♦ Animal Genetics and Genomics
Abstract Characterizing the genetic diversity present in a working set of plant germplasm can contribute to its effective management and genetic improvement. The cut flower chrysanthemum (Chrysanthemum morifolium Ramat.) is an economically important ornamental species. With the repeated germplasm exchange and intensive breeding activities, it remains a major task in genetic research. The purpose of the present study was to characterize the genetic diversity and the population structure of a worldwide collection of 159 varieties, and to apply an association mapping approach to identify DNA-based markers linked to five plant architecture traits and six inflorescence traits. The genotyping demonstrated that there was no lack of genetic diversity in the collection and that pair-wise kinship values were relatively low. The clustering based on a Bayesian model of population structure did not reflect known variation in either provenance or inflorescence type. A principal coordinate analysis was, however, able to discriminate most of the varieties according to both of these criteria. About 1 in 100 marker pairs exhibited a degree of linkage disequilibrium. The association analysis identified a number of markers putatively linked to one or more of the traits. Some of these associations were robust over two seasons. The findings provide an in-depth understanding of genetic diversity and population structure present in cut flower chrysanthemum varieties, and an insight into the genetic control of plant architecture and inflorescence-related traits.
ISSN 16174615
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2016-01-16
Publisher Place Berlin/Heidelberg
e-ISSN 16174623
Journal Molecular and General Genetics MGG
Volume Number 291
Issue Number 3
Page Count 9
Starting Page 1117
Ending Page 1125

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Source: SpringerLink