Interspecific hybridization between Sesamum indicum L. and Ceratotheca sesamoides Endl

Sesamum indicum L. (2n = 26) and Ceratotheca sesamoides Endl. (2n = 32) were crossed to investigate their genomic relations and feasibility of gene exchange. Results showed that crossability between the two species was low. Pollen viability was drastically reduced in the F1 hybrids. This was attribu...

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Published inTropicultura (Antwerpen, Belgium) Vol. 19; no. 3; pp. 127 - 130
Main Authors Falusi, O.A. (Science Technology Dept. Federal Polytechnic, Bida (Nigeria)), Salako, E.A, Ishaq, M.N
Format Journal Article
LanguageEnglish
Published Presses Agronomiques de Gembloux 2001
Subjects
AMELIORATION DES PLANTES
Ceratotheca sesamoides
Crossability
DISTANCE GENETIQUE
DISTANCIA GENETICA
FERTILIDAD
FERTILITE
FERTILITY
FITOMEJORAMIENTO
GENETIC DISORDERS
GENETIC DISTANCE
Genomic
HIBRIDACION INTERESPECIFICA
HYBRIDATION INTERSPECIFIQUE
INTERSPECIFIC HYBRIDIZATION
PLANT BREEDING
SESAMUM
Sesamum indicum
TRASTORNOS GENETICOS
TROUBLE GENETIQUE
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Summary:Sesamum indicum L. (2n = 26) and Ceratotheca sesamoides Endl. (2n = 32) were crossed to investigate their genomic relations and feasibility of gene exchange. Results showed that crossability between the two species was low. Pollen viability was drastically reduced in the F1 hybrids. This was attributed to meiotic abnormalities such as univalent and multivalent associations, non-disjunction bridges, and presence of fragments and micronuclei. Findings from this study also imply that gene exchange between Sesamum indicum L. and Ceratotheca sesamoides Endl. is possible. The implications of these results in the species evolution are discussed.
Bibliography:2002000621
F30
ISSN:0771-3312