Early Withering of Enlarged Ovules in Pollinated Fruits of Bananas (Musa spp.) Suggest Abortion after Fertilization

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dc.contributor.authorWaniale, Allan
dc.contributor.authorMukasa, Settumba B.
dc.contributor.authorTugume, Arthur K.
dc.contributor.authorKubiriba, Jerome
dc.contributor.authorTushemereirwe, Wilberforce K.
dc.contributor.authorTumuhimbise, Robooni
dc.date.accessioned2022-06-09T14:08:04Z
dc.date.available2022-06-09T14:08:04Z
dc.date.issued2022
dc.description.abstractSterility in edible bananas is as a result of a long history of anthropogenic-driven selection for sterile genotypes, since seed is not desirable in fruit pulp for human consumption. However, this poses a challenge to conventional genetic improvement by slowing breeding pipelines. In this study, we investigated whether pollen tubes reach all parts of the ovary, the position of fertilized ovule development in fruits, and potential seed set in selected banana genotypes. We selected four cultivars of East African Highland Cooking bananas (EAHBs), a Matooke hybrid ‘222K-1’, improved diploid ‘2905’, and wild bananas ‘Zebrina (G.F.)’ and ‘Calcutta 4’. There was evidence of pollen tubes in the distal, mid and proximal sections of the fruit, irrespective of hand position and genotype. Fertilization, as indicated by an increase in ovule size, happened along the entire length of the fruit but complete development was biased at the distal end in some genotypes. There were some differences in ovule fertilization rates between hands, with distal hands having more ovules and higher ovule fertilization rates. Ovule fertilization happens in bananas but the vast majority aborts, especially at the proximal end of the ovary. Ovule fertilization rates are generally much lower than available ovules.en_US
dc.identifier.citationWaniale, A.; Mukasa, S.B.; Tugume, A.K.; Kubiriba, J.; Tushemereirwe,W.K.; Tumuhimbise, R. EarlyWithering of Enlarged Ovules in Pollinated Fruits of Bananas (Musa spp.) Suggest Abortion after Fertilization. Horticulturae 2022, 8, 426. https://doi.org/10.3390/ horticulturae8050426en_US
dc.identifier.urihttps://doi.org/10.3390/ horticulturae8050426
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3848
dc.language.isoenen_US
dc.publisherHorticulturaeen_US
dc.subjectBanana pollinationen_US
dc.subjectPollen tubesen_US
dc.subjectOvule fertilizationen_US
dc.subjectOvule abortionen_US
dc.titleEarly Withering of Enlarged Ovules in Pollinated Fruits of Bananas (Musa spp.) Suggest Abortion after Fertilizationen_US
dc.typeArticleen_US
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