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dc.contributor.authorMushoriwa, H.
dc.contributor.authorMathew, I.
dc.contributor.authorGwata, E.T.
dc.contributor.authorTongoona, P.
dc.contributor.authorDerera, J.
dc.date.accessioned2022-06-08T09:36:23Z
dc.date.available2022-06-08T09:36:23Z
dc.date.issued2022
dc.identifier.citationMushoriwa, H., Mathew, I., Gwata, E.T., Tongoona, P. & Derera, J. (2022). Grain yield potential and stability of soybean genotypes of different ages across diverse environments in southern Africa. Agronomy, 12(5), 1-11.
dc.identifier.issn2073-4395
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7497
dc.description.abstractSoybean [Glycine max (L.) Merrill] is an important crop in southern Africa where it is cultivated in a wide range of agro-ecologies. Both spatial and seasonal variability is high in the region. As a result, breeders aim to release varieties with a fine balance of high productivity potential and stability. Genotype × environment interaction (GEI) limits the selection of superior genotypes in heterogeneous environments consequently slowing down breeding progress. This study determined the magnitude of GEI effects and genotype superiority index of soybean genotypes of different ages across three countries in southern Africa. Forty-two soybean genotypes that were released between 1966 and 2013 were evaluated for two seasons at thirteen diverse locations across the three countries. Additive main effects and multiplicative interaction (AMMI) and genotype superiority index tools were used to analyse both productivity and stability performance of these genotypes. The AMMI analysis showed that grain yield variation due to genotypes, environments main effects and GEI were highly significant (p < 0.001). Environments explained the greatest proportion (77%) of the total treatment sum of squares followed by GEI (17.4%) and genotypes (5.6%), justifying the need for multi-environmental trials over many seasons in this region. The two methods were useful in discriminating and identifying common productive and stable genotypes of different ages. The top four high-yielding (>5.0 tha−1) genotypes displayed both stability and genotype superiority index. These findings have important implications for soybean genotype recommendations, breeding progress, and strategy.
dc.format.extent1-11
dc.language.isoen
dc.subjectAdaptation
dc.subjectGenotypes
dc.subjectGenotype Environment Interaction
dc.subjectSoybeans
dc.subjectYields
dc.titleGrain yield potential and stability of soybean genotypes of different ages across diverse environments in southern Africa
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.affiliationInternational Crops Research Institute for the Semi-Arid Tropics
cg.contributor.affiliationUniversity of KwaZulu-Natal
cg.contributor.affiliationUniversity of Venda
cg.contributor.affiliationUniversity of Ghana
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionSouthern Africa
cg.coverage.countryMalawi
cg.coverage.countryZambia
cg.coverage.countryZimbabwe
cg.coverage.hubHeadquarters and Western Africa Hub
cg.identifier.bibtexciteidMUSHORIWA:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.iitasubjectSoybean
cg.journalAgronomy
cg.notesOpen Access Journal; Published online: 10 May 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3390/agronomy12051147
cg.futureupdate.requiredNo
cg.identifier.issue5
cg.identifier.volume12


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