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Genetic variability and population structure of Ethiopian chickpea (Cicer arietinum L.) germplasm
- Source :
- PLoS ONE, PLoS ONE, Vol 16, Iss 11, p e0260651 (2021)
- Publication Year :
- 2021
-
Abstract
- Evaluation of the genetic diversity and an understanding of the genetic structure and relationships of chickpea genotypes are valuable to design efficient germplasm conservation strategies and crop breeding programs. Information is limited, in these regards, for Ethiopian chickpea germplasms. Therefore, the present study was carried out to estimate the genetic diversity, population structure, and relationships of 152 chickpea genotypes using simple sequence repeats (SSR) markers. Twenty three SSR markers exhibited polymorphism producing a total of 133 alleles, with a mean of 5.8 alleles per locus. Analyses utilizing various genetic-based statistics included pairwise population Nei’s genetic distance, heterozygosity, Shannon’s information index, polymorphic information content, and percent polymorphism. These analyses exemplified the existence of high genetic variation within and among chickpea genotypes. The 152 genotypes were divided into two major clusters based on Nei’s genetic distances. The exotic genotypes were grouped in one cluster exclusively showing that these genotypes are distinct to Ethiopian genotypes, while the patterns of clustering of Ethiopian chickpea genotypes based on their geographic region were not consistent because of the seed exchange across regions. Model-based population structure clustering identified two discrete populations. These finding provides useful insight for chickpea collections and ex-situ conservation and national breeding programs for widening the genetic base of chickpea.
- Subjects :
- Germplasm
Conservation genetics
Heredity
DNA, Plant
Conservation Biology
Ecological Metrics
Science
Population genetics
Variant Genotypes
Biology
Polymorphism, Single Nucleotide
Microsatellite Loci
Gene Types
Genetic variation
Genetics
Genetic variability
Alleles
Conservation Science
Genetic diversity
Evolutionary Biology
Multidisciplinary
Heterozygosity
Population Biology
Geography
Ecology
Ecology and Environmental Sciences
Genetic Variation
Biology and Life Sciences
Species Diversity
Agriculture
Cicer
Agronomy
Plant Breeding
Phylogeography
Genetic Mapping
Shannon Index
Genetic distance
Biogeography
Evolutionary biology
Genetic structure
Earth Sciences
Conservation Genetics
Medicine
Genome, Plant
Population Genetics
Microsatellite Repeats
Research Article
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 16
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- PloS one
- Accession number :
- edsair.doi.dedup.....3577461971a0897fb459b322392eced2