Biological Factors Affecting Seed Production in East African Highland Bananas

Autor:	M. Magambo, D. Makumbi, R. Ssebuliba, David Talengera, Patrick Rubaihayo, Michael Pillay, Abdou Tenkouano
Rok vydání:	2006
Předmět:	East African Highland bananas Bract biology Sterility food and beverages Soil Science Plant Science biology.organism_classification Agronomy Inflorescence Musa acuminata Genetics PEST analysis Cultivar Agronomy and Crop Science Hybrid
Zdroj:	Journal of Crop Improvement. 16:67-79
ISSN:	1542-7536 1542-7528
DOI:	10.1300/j411v16n01_05
Popis:	Seed production from hybridizations involving the East African Highland bananas (Mum spp., AAA group) is low due to high levels of sterility. This is a major impediment for the development of hybrids with disease and pest resistance and superior agronomic traits. The objective of this study was to examine the effect of inflorescence and stigma developmental stages on seed production in East African Highland bananas. Five female-fertile cultivars were pollinated daily with Musa acuminata spp. burmannicoides ‘Calcutta 4’ as the male parent. The level of female bract opening, distribution of the stigma development stages, and seed production per hand of a bunch were recorded. Means and standard deviations were computed for the ratings given to levels of bract opening. AChi-square test was used to determine whether hand position affects the distribution of stigma classes. Correlation coefficients were calculated to determine the relationship of seed set to stigma development stages. At the time of po...
Databáze:	OpenAIRE
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