Show simple item record

Secondary metabolites content may clarify the traditional selection process of the greater yam cultivars (Dioscorea alata L.)

dc.contributor.authorLebot, V.
dc.contributor.authorMalapa, R.
dc.contributor.authorAbraham, K.
dc.contributor.authorMolisale, T.
dc.contributor.authorVan Kien, N.
dc.contributor.authorGueye, B.
dc.contributor.authorWaki, J.
dc.date.accessioned2019-12-04T11:26:31Z
dc.date.available2019-12-04T11:26:31Z
dc.date.issued2018-08
dc.identifier.citationLebot, V., Malapa, R., Abraham, K., Molisalé, T., Van Kien, N., Gueye, B. & Waki, J. (2018). Secondary metabolites content may clarify the traditional selection process of the greater yam cultivars (Dioscorea alata L.). Genetic Resources and Crop Evolution, 65(6), 1699-1709.
dc.identifier.issn0925-9864
dc.identifier.urihttps://hdl.handle.net/20.500.12478/4639
dc.descriptionPublished online: 15 May 2018
dc.description.abstractDioscorea alata L. is one of the most widely grown and economically important yam species. Hundreds of accessions are maintained ex situ in germplasm collections and have been characterized with descriptors but new tools are still needed to assess tuber chemical composition. The objectives of the present study were to analyze saponins and catechins profiles in 388 D. alata cultivars (landraces) from distant geographical sources (Nigeria, Vietnam, Papua New Guinea and Vanuatu) and to compare them with those of 162 selected hybrids. The relationships between these compounds and tuber flesh oxidation and browning were also studied in order to understand their possible role in the ancient cultivars selection process. Dioscin and gracillin, the most documented Dioscorea saponins, were absent among the 550 D. alata cultivars and hybrids analyzed using HP-TLC. Two saponins and four catechins were quantitated, including epicatechin. Mean total catechins and saponins values were very low for most cultivars and higher mean values were found in hybrids. Correlation coefficients revealed possible relationships between total saponins and catechins contents with speed of oxidation, presence of mucilage and flour colour. Distribution of cultivars values within each country indicate that these were mostly selected for their low saponins and catechins contents through simple visual assessment. Metabolite profiles can be used to improve the phenotyping efficiency of D. alata hybrids generated through conventional breeding.
dc.description.sponsorshipAgropolis Fondation
dc.format.extent1699-1709
dc.language.isoen
dc.rightsOther
dc.subjectDioscorea Alata
dc.subjectDomestication
dc.subjectSaponins
dc.subjectTuber
dc.titleSecondary metabolites content may clarify the traditional selection process of the greater yam cultivars (Dioscorea alata L.)
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpGenebanks
cg.contributor.affiliationCentre de Coopération Internationale en Recherche Agronomique pour le Développement
cg.contributor.affiliationVanuatu Agricultural Research and Technical Centre
cg.contributor.affiliationCentral Tuber Crops Research Institute
cg.contributor.affiliationPlant Resources Center, Vietnam
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationNational Agricultural Research Institute, Papua New Guinea
cg.creator.identifierBadara GUEYE: 0000-0003-3157-8772
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPlant Breeding
cg.journalGenetic Resources and Crop Evolution
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid101350
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s10722-018-0647-0


Files in this item

Thumbnail
Name:
S18ArtLebotSecondaryInthomDev.pdf
Size:
703.3Kb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record