Biological Factors Affecting Seed Production in East African Highland Bananas
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 e...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2006
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/91781 |
| _version_ | 1855516757507178496 |
|---|---|
| author | Ssebuliba, R. Magambo, M. Talengera, D. Makumbi, Dan Tenkouano, A. Rubaihayo, P.R. Pillay, M. |
| author_browse | Magambo, M. Makumbi, Dan Pillay, M. Rubaihayo, P.R. Ssebuliba, R. Talengera, D. Tenkouano, A. |
| author_facet | Ssebuliba, R. Magambo, M. Talengera, D. Makumbi, Dan Tenkouano, A. Rubaihayo, P.R. Pillay, M. |
| author_sort | Ssebuliba, R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | 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 pollination it was observed that the bracts of the upper hands were narrowly open, the bracts on the lower hands widely open and those in the middle hands were intermediate between the two extremes. Stigma development stages I and II were common in the upper hands, III in the middle hands, while lower hands were in stage IV. More seeds were obtained from the middle than from the upper and lower hands in a bunch. Stage III stigmas were highly receptive, stages I and II were not yet receptive while stage IV stigmas had lost receptivity. Pollinating hands with stage III stigmas could improve seed production in the East African Highland bananas. |
| format | Journal Article |
| id | CGSpace91781 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace917812024-11-19T09:28:50Z Biological Factors Affecting Seed Production in East African Highland Bananas Ssebuliba, R. Magambo, M. Talengera, D. Makumbi, Dan Tenkouano, A. Rubaihayo, P.R. Pillay, M. east african highland banana fertility seed production stigma receptivity genetics 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 pollination it was observed that the bracts of the upper hands were narrowly open, the bracts on the lower hands widely open and those in the middle hands were intermediate between the two extremes. Stigma development stages I and II were common in the upper hands, III in the middle hands, while lower hands were in stage IV. More seeds were obtained from the middle than from the upper and lower hands in a bunch. Stage III stigmas were highly receptive, stages I and II were not yet receptive while stage IV stigmas had lost receptivity. Pollinating hands with stage III stigmas could improve seed production in the East African Highland bananas. 2006-07-20 2018-03-23T06:48:45Z 2018-03-23T06:48:45Z Journal Article https://hdl.handle.net/10568/91781 en Limited Access Informa UK Limited Ssebuliba, R., Magambo, M., Talengera, D., Makumbi, D., Tenkouano, A., Rubaihayo, P. & Pillay, M. (2006). Biological Factors Affecting Seed Production in East African Highland Bananas. Journal of Crop Improvement 16(1-2): 67-79. https://doi.org/10.1300/J411v16n01_05 |
| spellingShingle | east african highland banana fertility seed production stigma receptivity genetics Ssebuliba, R. Magambo, M. Talengera, D. Makumbi, Dan Tenkouano, A. Rubaihayo, P.R. Pillay, M. Biological Factors Affecting Seed Production in East African Highland Bananas |
| title | Biological Factors Affecting Seed Production in East African Highland Bananas |
| title_full | Biological Factors Affecting Seed Production in East African Highland Bananas |
| title_fullStr | Biological Factors Affecting Seed Production in East African Highland Bananas |
| title_full_unstemmed | Biological Factors Affecting Seed Production in East African Highland Bananas |
| title_short | Biological Factors Affecting Seed Production in East African Highland Bananas |
| title_sort | biological factors affecting seed production in east african highland bananas |
| topic | east african highland banana fertility seed production stigma receptivity genetics |
| url | https://hdl.handle.net/10568/91781 |
| work_keys_str_mv | AT ssebulibar biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT magambom biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT talengerad biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT makumbidan biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT tenkouanoa biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT rubaihayopr biologicalfactorsaffectingseedproductionineastafricanhighlandbananas AT pillaym biologicalfactorsaffectingseedproductionineastafricanhighlandbananas |