Autosyndetic pairing in Gibasis (Commelinaceae) hybrids revealed by C-banding

Two closely related species of Gibasis, G. karwinskyana and G. consobrina , and their F sub(1) hybrids were studied cytologically at the diploid and tetraploid level. Despite similarity in their basic karyotype, pairing was extremely limited in the diploid hybrid and almost exclusively autosyndetic...

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Veröffentlicht in:	Chromosoma 1985-01, Vol.92 (3), p.176-184
Hauptverfasser:	Kenton, A, Jones, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions Biological and medical sciences chromosome banding chromosome pairing Commelinaceae Cytogenetics Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants Genetics of eukaryotes. Biological and molecular evolution hybrids Interspecific and intergeneric hybridization, introgressions karyotyping Plant breeding: fundamental aspects and methodology Pteridophyta, spermatophyta Vegetals and fungi
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Zusammenfassung:	Two closely related species of Gibasis, G. karwinskyana and G. consobrina , and their F sub(1) hybrids were studied cytologically at the diploid and tetraploid level. Despite similarity in their basic karyotype, pairing was extremely limited in the diploid hybrid and almost exclusively autosyndetic in the tetraploid, except for multivalent formation due to interchange heterozygosity. The analysis was considerably facilitated by the use of C-banding techniques at meiosis, by which the chromosomes of each species could be readily identified.
ISSN:	0009-5915 1432-0886
DOI:	10.1007/BF00348691