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Traits that define yield and genetic gain in east African highland banana breeding

dc.contributor.authorBatte, M.
dc.contributor.authorSwennen, R.
dc.contributor.authorUwimana, B.
dc.contributor.authorAkech, V.
dc.contributor.authorBrown, A.
dc.contributor.authorGeleta, M.
dc.contributor.authorOrtiz, R.
dc.date.accessioned2021-10-13T09:16:28Z
dc.date.available2021-10-13T09:16:28Z
dc.date.issued2021
dc.identifier.citationBatte, M., Swennen, R., Uwimana, B., Akech, V., Brown, A., Geleta, M. & Ortiz, R. (2021). Traits that define yield and genetic gain in East African highland banana breeding. Euphytica, 217(10), 1-10.
dc.identifier.issn0014-2336
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7269
dc.description.abstractEast African highland bananas (Musa spp. AAA group) are an important staple in the Great Lakes region of East Africa. Their production has declined due to pests and diseases. Breeding for host plant resistance is a sustainable option for addressing this challenge. Understanding the relationships between growth parameters and bunch weight (i.e., yield) is crucial to guide breeding efforts for this crop. We investigated cause-effect relationships, through path analysis, in bunch weight of East African highland banana derived hybrids, their parents and grandparents. These family structures were planted in a 7 × 8 rectangular lattice design, replicated twice. Genetic gains for bunch weight (kg plant−1) and yield potential (t ha−1 year−1) were estimated. Significant increases of bunch weight and yield potential were noted from the landrace triploid germplasm, their derived primary tetraploid hybrids and secondary triploid bred-germplasm. Path analysis revealed that fruit length, circumference and number, number of hands and plant cycle number had a direct positive effect on the bunch weight. Days to fruit filling, days to maturity and index of non-spotted leaves had indirect effects on bunch weight. The average genetic gains for bunch weight and yield potential were 1.4% and 1.3% per year, respectively. This is the first report about genetic gains in banana breeding. Our findings may be useful for assessing progress and directing future breeding efforts in banana breeding.
dc.description.sponsorshipInternational Institute of Tropical Agriculture
dc.description.sponsorshipCGIAR Fund Donors
dc.format.extent1-10
dc.language.isoen
dc.subjectBananas
dc.subjectEast Africa
dc.subjectPath Analysis
dc.subjectYields
dc.subjectGenetic Gain
dc.subjectBreeding
dc.titleTraits that define yield and genetic gain in east African highland banana breeding
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationSwedish University of Agricultural Sciences
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryUganda
cg.coverage.hubSouthern Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidBATTE:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAgronomy
cg.iitasubjectBanana
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Production
cg.iitasubjectValue Chains
cg.journalEuphytica
cg.notesOpen Access Article; Published online: 24 Sep 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s10681-021-02920-x
cg.iitaauthor.identifierMichael Batte: 0000-0002-6793-2967
cg.iitaauthor.identifierRony Swennen: 0000-0002-5258-9043
cg.iitaauthor.identifierBrigitte Uwimana: 0000-0001-7460-9001
cg.iitaauthor.identifierAllen Brown: 0000-0002-4468-5932
cg.futureupdate.requiredNo
cg.identifier.issue10: 193
cg.identifier.volume217


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