The mating system of Sesbania sesban (L.) Merr. (leguminosae)

Vista sencilla de ítem
dc.creatorGebremariam, G.
dc.creatorNemomissa, S.
dc.creatorDemissie, A.
dc.creatorHanson, Jean
dc.date2002
dc.date2013-05-06T07:00:46Z
dc.date2013-05-06T07:00:46Z
dc.date.accessioned2026-06-27T17:01:16Z
dc.descriptionThe 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.
dc.identifierhttps://hdl.handle.net/10568/28513
dc.identifier.urihttp://hdl.handle.net/123456789/139896
dc.languageen
dc.rightsLimited Access
dc.sourceEthiopian Journal of Science;25(2): 177-190
dc.subjectsesbania sesban
dc.subjectmating systems
dc.subjectmalate dehydrogenase
dc.subjectallozymes
dc.subjectpopulation genetics
dc.subjectseeds
dc.subjectgermination
dc.subjectgenotypes
dc.subjectprogeny
dc.subjectseed collection
dc.titleThe mating system of Sesbania sesban (L.) Merr. (leguminosae)
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional de Investigaciones Pecuarias (ILRI)