Seed Set Patterns in East African Cooking Bananas (Musa spp.) are Dependent on Weather Before, During, and After Pollination

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dc.contributor.authorWaniale, Allan
dc.contributor.authorMukasa, Settumba B.
dc.contributor.authorTugume, Arthur K.
dc.contributor.authorTumuhimbise, Robooni
dc.contributor.authorKubiriba, Jerome
dc.contributor.authorTushemereirwe, Wilberforce K.
dc.contributor.authorBatte, Michael
dc.contributor.authorBrown, Allan
dc.contributor.authorSwennen, Rony
dc.date.accessioned2022-05-27T17:23:20Z
dc.date.available2022-05-27T17:23:20Z
dc.date.issued2020
dc.description.abstractSeed set in banana (Musa spp.) is influenced by weather but the most critical weather attribute(s) and the critical period are unknown. Such information is of paramount importance to increase seed set for banana breeding programs. Three female fertile East African cooking bananas (EACBs), ‘Enzirabahima’ (AAA), ‘Mshale’ (AA), and ‘Nshonowa’ (AA) were pollinated with the highly male fertile wild banana ‘Calcutta 4’ (AA). At full maturity, bunches were harvested and ripened and seeds extracted from ripe fruit pulp. Seed set was then correlated with weather before, during, and after pollination. Results: Seed set was positively correlated with high temperatures (r=0.172 – 0.488), solar radiation (r=0.181 – 0.282) and negatively correlated with rainfall (r=-0.214 – -0.238) and relative humidity (RH) (r=-0.158 – -0.438) between 75 and 15 days before pollination (DBP). The pattern of weather association was cultivar-dependent with ‘Nshonowa’ having the strongest significant associations. At the time of pollination, high average temperatures were critical for seed set in ‘Enzirabahima’ (r=0.214, P<0.01) while high morning RH was critical for ‘Mshale’ (r=0.299, P<0.01). After pollination, high morning temperatures were associated with seed set (r=0.150 – 0.429) between 15 days to 90 days after pollination (DAP). High average temperatures were negatively correlated with seed set in ‘Mshale’ and ‘Nshonowa’ from 45 DAP to time of harvest (r=-0.208 – -0.344). Coefficients of correlation were generally highest 15 DBP especially for ‘Mshale’ and ‘Nshonowa.’ Principle component analysis showed that average and maximum temperature are the most important variables in the entire data set. Conclusion: Coefficients of correlation were generally less than 0.5 partly as a result of weather involvement in seed set at several floral development stages; before, during, and after pollination. The most critical developmental stage is 15 DBP especially for ‘Mshale’ and ‘Nshonowa’ as they had the high correlation coefficients. Average temperature should be the main focus for seed set increase in banana.en_US
dc.identifier.citationWaniale, A., Mukasa, S. B., Tugume, A. K., Tumuhimbise, R., Kubiriba, J., Tushemereirwe, W. K., ... & Swennen, R. (2020). Seed Set Patterns in East African Cooking Bananas (Musa spp.) are Dependent on Weather Before, During, and After Pollination. https://doi.org/10.21203/rs.3.rs-38376/v1en_US
dc.identifier.otherhttps://doi.org/10.21203/rs.3.rs-38376/v1
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3605
dc.language.isoenen_US
dc.publisherResearch Squareen_US
dc.subjectBanana breedingen_US
dc.subjectMatooke and Mchare pollinationen_US
dc.subjectPCAen_US
dc.subjectWeather attributesen_US
dc.titleSeed Set Patterns in East African Cooking Bananas (Musa spp.) are Dependent on Weather Before, During, and After Pollinationen_US
dc.typeArticleen_US
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