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dc.contributor.authorLoko, Y.L.
dc.contributor.authorBhattacharjee, R.
dc.contributor.authorAgre, A.A.
dc.contributor.authorDossou-Aminon, I.
dc.contributor.authorOrobiyi, A.
dc.contributor.authorDjedatin, G.L.
dc.contributor.authorDansi, M.
dc.date.accessioned2019-12-04T11:03:52Z
dc.date.available2019-12-04T11:03:52Z
dc.date.issued2016-08-23
dc.identifier.citationLoko, Y. L., Bhattacharjee, R., Agre, A.P., Dossou-Aminon, I., Orobiyi, A., Djedatin, G.L. & Dansi, A. 2016. Genetic diversity and relationship of Guinea yam (Dioscorea cayenensis Lam.–D. rotundata Poir. complex) germplasm in Benin (west Africa) using microsatellite markers. Genetic Resources and Crop Evolution, 1-15.
dc.identifier.issn0925-9864
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1263
dc.description.abstractGuinea yam (Dioscorea cayenensis–D. rotundata complex) is an important tuber crop that highly contributes to food security and poverty alleviation in Benin. The knowledge and understanding of the extent of genetic variation of Guinea yam germplasm is important for planning of the genetic conservation, and the utilisation of this resource. The objective of this study was to assess the genetic diversity and relationships of 64 yam landraces whose dried chips are considered as resistant to insect attacks using 41 simple sequence repeat. Among these primers, 13 were found to be polymorphic, giving 113 polymorphic alleles. The number of alleles per locus ranged from 4 (Ym50) to 13 (Ym29), with an average of 8.69. Unique allele was observed with some landraces (Singou and Tchakatchaka) and can be considered as unique gene and use in yam breeding program. The mean polymorphic information content values for all markers used was 0.76 and ranged between 0.58 and 0.91 in loci YM3 and YM32 respectively. The genetic distance of yam landraces ranged from 0.45 (Yasoubagarou) to 0.04 (Assinapeira and Alahina), indicating that the yam germplasm has a high degree of genetic diversity supported by an averagely observed heterozygosity of 0.78. Cluster analysis using unweighted pair group method with arithmetic average grouped the 64 yam landraces into two distinct clusters. This tendency was also observed in the principal coordinate analysis. The analysis of molecular variance revealed that 96 % of the variation was found within the population and only 4 % between the populations. Genetic diversity and relationship assessments among the 64 yam landraces of Benin could provide useful information for efficient use of these materials, especially for genetic improvement.
dc.format.extent1-15
dc.language.isoen
dc.subjectDioscorea Cayenensis
dc.subjectGenetic Variation
dc.subjectDna
dc.titleGenetic diversity and relationship of Guinea yam (Dioscorea cayenensis Lam.-D. rotundata Poir. complex) germplasm in Benin (west Africa) using microsatellite markers
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationPolytechnic University of Abomey
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryBenin
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectGenetic Improvement
cg.iitasubjectYam
cg.journalGenetic Resources and Crop Evolution
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid78666
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s10722-016-0430-z


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