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Effects of in vitro polyploidization on agronomic characteristics and fruit carotenoid content; implications for banana genetic improvement

dc.contributor.authorAmah, D.
dc.contributor.authorvan Biljon, A.
dc.contributor.authorMaziya-Dixon, B.
dc.contributor.authorLabuschagne, M.
dc.contributor.authorSwennen, R.
dc.date.accessioned2019-12-04T11:39:09Z
dc.date.available2019-12-04T11:39:09Z
dc.date.issued2019-11-12
dc.identifier.citationAmah, D., van Biljon, A., Maziya-Dixon, B., Labuschagne, M.T. & Swennen, R. (2019). Effects of in vitro polyploidization on agronomic characteristics and fruit carotenoid content; implications for banana genetic improvement. Frontiers in Plant Science, 10: 1450, 1-12.
dc.identifier.issn1664-462X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6553
dc.descriptionOpen Access Journal
dc.description.abstractBananas (Musa spp.), native to South East Asia, have spread worldwide and are integrated into the diets of millions of people in tropical regions. Carotenoid content varies dramatically between different banana genotypes, providing an opportunity for vitamin A biofortification. Polyploidization is a useful tool for crop improvement with potential to generate new diversity, especially in a polyploid crop like bananas. Ten induced tetraploids generated from six diploid banana genotypes were evaluated for their agronomic attributes and fruit carotenoid content in comparison to their diploid progenitors. Tetraploids had distinct plant morphology, but generally displayed inferior vegetative and yield characteristics with 20% lower bunch weights than their original diploids. Similarly, a 50% decrease in fruit provitamin A carotenoids (α-carotene, 13-cis β-carotene, 9-cis β-carotene, trans-β-carotene) accompanied by a corresponding increase in lutein was recorded in induced tetraploids in comparison to their original diploids. Additionally, all lines were subjected to pollen viability tests to assess their fertility. Pollen viability tests indicated over 70% viability for induced tetraploids and diploid controls, suggesting their possible use in crosses. These findings provide a basis for the application of induced polyploidization in bananas to generate useful genetic material for integration in hybridization programmes aiming to produce vitamin A enriched triploids valuable to malnourished populations.
dc.description.sponsorshipHarvestPlus
dc.format.extent1-12
dc.language.isoen
dc.rightsCC-BY-4.0
dc.subjectBananas
dc.subjectGenetic Improvement
dc.subjectCarotenoids
dc.subjectInduced Polyploidy
dc.subjectDiploids
dc.subjectRetinol
dc.subjectPollen
dc.subjectViability
dc.titleEffects of in vitro polyploidization on agronomic characteristics and fruit carotenoid content; implications for banana genetic improvement
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of the Free State
cg.coverage.regionAsia
cg.coverage.regionSoutheast Asia
cg.creator.identifierDelphine Amah: 0000-0002-5706-8773
cg.creator.identifierRony Swennen: 0000-0002-5258-9043
cg.researchthemeBIOTECH & PLANT BREEDING
cg.researchthemeNUTRITION & HUMAN HEALTH
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectBanana
cg.iitasubjectGenetic Improvement
cg.iitasubjectNutrition
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.journalFrontiers in Plant Science
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid110115
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3389/fpls.2019.01450


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