Abstract:
:A better understanding of the structure and extent of genetic variability in a breeding population of a crop is essential for translating genetic diversity to genetic gain. We assessed the nature and pattern of genetic variability and differentiation in a panel of 100 winged-yam (Dioscorea alata) accessions using 24 phenotypic traits and 6,918 single nucleotide polymorphism (SNP) markers. Multivariate analysis for phenotypic variability indicated that all phenotypic traits assessed were useful in discriminating the yam clones and cultivars. Cluster analysis based on phenotypic data distinguished two significant groups, while a corresponding analysis with SNP markers indicated three genetic groups. However, joint analysis for the phenotypic and genotypic data provided three clusters that could be useful for the identification of heterotic groups in the D. alata breeding program. Our analysis for phenotypic and molecular level diversity provided valuable information about overall diversity and variation in economically important traits useful for establishing crossing panels with contrasting traits of interest. The selection and hybridization of parental lines from the different heterotic groups identified would facilitate maximizing diversity and exploiting population heterosis in the D. alata breeding program.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Agre P,Asibe F,Darkwa K,Edemodu A,Bauchet G,Asiedu R,Adebola P,Asfaw Adoi
10.1038/s41598-019-54761-3subject
Has Abstractpub_date
2019-12-03 00:00:00pages
18221issue
1issn
2045-2322pii
10.1038/s41598-019-54761-3journal_volume
9pub_type
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