气候变化领域集成服务门户(CCPortal): DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm

CCPortal

DOI	10.1016/j.sciaf.2024.e02065
	DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm
	Koura, Abdoulaye Ali; Kena, Alexander Wireko; Annor, Benjamin; Adejumobi, Idris I.; Maina, Fanna; Maazou, Abdoul- Raouf S.; Razakou, Ibrahim B. Y. A.; Attamah, Patrick; Kusi, Francis; Boukar, Ousmane; Akromah, Richard
发表日期	2024
ISSN	2468-2276
起始页码	23
卷号	23
英文摘要	The potential of cowpea (Vigna unguiculata [L] Walp) to contribute to food security and livelihood sustenance of sub-Sahara Africans is constantly threatened by many biotic and abiotic stresses that are aggravated by climate change. To address these threats, cowpea breeding programs in the subregion prioritize climate-resilience traits and resistance to biotic stresses. However, before successful trait discovery and implementation, it is essential to characterize diversity and population structure of cowpea germplasm. To test the hypothesis that assembled cowpea germplasm exhibits limited and narrow genetic diversity with a well-defined population structure, we assessed the level of genetic variability and characterized the population structure of 188 cowpea genotypes using 5147 Single Nucleotide Polymorphism (SNP) markers. The structure results revealed five major genetic groups with moderate levels of genetic diversity and an admixture level of 17 %. Discriminant analysis and phylogenetic analysis supported this finding, indicating the presence of distinct groups within the cowpea population. The analysis of molecular variance (AMOVA) showed 27 % among population variance, 64 % within-population variance, and 9 % within individual variance. While considering the origin, the AMOVA showed 16 % among population variance, 75 % among individual variance, and 9 % within individual variance. This study provides valuable insights for future cowpea improvement programs by facilitating the selection of suitable progenitors for population development, and contributing in the conservation of cowpea genetic resources. Addressing these challenges and enhancing cowpea's diversity and resilience are crucial steps towards ensuring food security and sustainable livelihoods in subSaharan Africa.
英文关键词	Cowpea; Single nucleotide polymorphism; Diversity; Genetic group; DArT-Seq
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001175300900001
来源期刊	SCIENTIFIC AFRICAN
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298193
作者单位	CGIAR; International Institute of Tropical Agriculture (IITA); CGIAR; International Institute of Tropical Agriculture (IITA)
推荐引用方式 GB/T 7714	Koura, Abdoulaye Ali,Kena, Alexander Wireko,Annor, Benjamin,et al. DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm[J],2024,23.
APA	Koura, Abdoulaye Ali.,Kena, Alexander Wireko.,Annor, Benjamin.,Adejumobi, Idris I..,Maina, Fanna.,...&Akromah, Richard.(2024).DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm.SCIENTIFIC AFRICAN,23.
MLA	Koura, Abdoulaye Ali,et al."DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm".SCIENTIFIC AFRICAN 23(2024).