The mating system of Sesbania sesban (L.) Merr. (leguminosae)
The mating system of Sesbania sesban was studied using one natural population and two cultivated populations. A large number of progeny (600) was assayed from each population for one polymorphic locus of Malate dehydrogenase (Mdh). The level of out-crossing in the studied populations ranged from 40-...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/28513 |
| _version_ | 1855532045299613696 |
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| author | Gebremariam, G. Nemomissa, S. Demissie, A. Hanson, Jean |
| author_browse | Demissie, A. Gebremariam, G. Hanson, Jean Nemomissa, S. |
| author_facet | Gebremariam, G. Nemomissa, S. Demissie, A. Hanson, Jean |
| author_sort | Gebremariam, G. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The mating system of Sesbania sesban was studied using one natural population and two cultivated populations. A large number of progeny (600) was assayed from each population for one polymorphic locus of Malate dehydrogenase (Mdh). The level of out-crossing in the studied populations ranged from 40-100 % . The genotype frequencies were in agreement with those of the Hardy-Weinberg expected genotype proportions as in randomly mating populations at P < 0.05. The floral structure and the pollen shedding behaviour of the flowers of S. sesban could favour cross-pollination and/or selfpollination depending on the circumstances. Self-pollination usually occurs late in the flowering period when pollinators fail to visit the flowers. Such a "delayed selfing" facilitates out-crossing in the presence of appropriate pollinators under natural conditions, but confers a selective advantage where pollinators are limiting. The results indicated that S. sesban could be self-fertilized in the absence of pollinators or could out-cross with other heterozygous individuals in the neighboring population when suitable pollinators are available. S. sesban exhibits "facultative xenogamy" or "delayed selfing" and is a mixed mating species. |
| format | Journal Article |
| id | CGSpace28513 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| record_format | dspace |
| spelling | CGSpace285132022-01-29T16:15:48Z The mating system of Sesbania sesban (L.) Merr. (leguminosae) Gebremariam, G. Nemomissa, S. Demissie, A. Hanson, Jean sesbania sesban mating systems malate dehydrogenase allozymes population genetics seeds germination genotypes progeny seed collection The mating system of Sesbania sesban was studied using one natural population and two cultivated populations. A large number of progeny (600) was assayed from each population for one polymorphic locus of Malate dehydrogenase (Mdh). The level of out-crossing in the studied populations ranged from 40-100 % . The genotype frequencies were in agreement with those of the Hardy-Weinberg expected genotype proportions as in randomly mating populations at P < 0.05. The floral structure and the pollen shedding behaviour of the flowers of S. sesban could favour cross-pollination and/or selfpollination depending on the circumstances. Self-pollination usually occurs late in the flowering period when pollinators fail to visit the flowers. Such a "delayed selfing" facilitates out-crossing in the presence of appropriate pollinators under natural conditions, but confers a selective advantage where pollinators are limiting. The results indicated that S. sesban could be self-fertilized in the absence of pollinators or could out-cross with other heterozygous individuals in the neighboring population when suitable pollinators are available. S. sesban exhibits "facultative xenogamy" or "delayed selfing" and is a mixed mating species. 2002 2013-05-06T07:00:46Z 2013-05-06T07:00:46Z Journal Article https://hdl.handle.net/10568/28513 en Limited Access Ethiopian Journal of Science;25(2): 177-190 |
| spellingShingle | sesbania sesban mating systems malate dehydrogenase allozymes population genetics seeds germination genotypes progeny seed collection Gebremariam, G. Nemomissa, S. Demissie, A. Hanson, Jean The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title | The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title_full | The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title_fullStr | The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title_full_unstemmed | The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title_short | The mating system of Sesbania sesban (L.) Merr. (leguminosae) |
| title_sort | mating system of sesbania sesban l merr leguminosae |
| topic | sesbania sesban mating systems malate dehydrogenase allozymes population genetics seeds germination genotypes progeny seed collection |
| url | https://hdl.handle.net/10568/28513 |
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