Cytotaxonomical investigations of the tribes Asclepiadeae and Ceropegieae of the subfamily Asclepiadoideae-Apocynaceae.
E. A. Kamel, S. M. Sharawy and E. A. K. Karakish.; Ehab Abdel-Razik Kamel;
Abstract
In this study, karyotype criteria of 27 accessions (17 taxa) of the two tribes Asclepiadeae (20 accessions) and
Ceropegieae (7 accessions) from Egypt and Saudi Arabia belonging to subfamily Asclepiadoideae are described and
polyploid variations are also discussed. Detailed karyotype features, i.e. total chromosome length (TCL), mean chromosome
length (MCL) and karyotype asymmetry expressed as arm ratio (MAR), total form percent (TF %), intrachromosomal
asymmetry (A1) and interchromosomal asymmetry (A2), are also described. Karyotype features of the studied accessions
were used to assess the tribal relationships within the subfamily Asclepiadoideae to differentiate between taxa that belonging
to the tribes Asclepiadeae and Ceropegieae in the light of the current systems of classification. In addition, new chromosome
counts of 16 taxa or accessions are reported here for the first time.
Ceropegieae (7 accessions) from Egypt and Saudi Arabia belonging to subfamily Asclepiadoideae are described and
polyploid variations are also discussed. Detailed karyotype features, i.e. total chromosome length (TCL), mean chromosome
length (MCL) and karyotype asymmetry expressed as arm ratio (MAR), total form percent (TF %), intrachromosomal
asymmetry (A1) and interchromosomal asymmetry (A2), are also described. Karyotype features of the studied accessions
were used to assess the tribal relationships within the subfamily Asclepiadoideae to differentiate between taxa that belonging
to the tribes Asclepiadeae and Ceropegieae in the light of the current systems of classification. In addition, new chromosome
counts of 16 taxa or accessions are reported here for the first time.
Other data
Title | Cytotaxonomical investigations of the tribes Asclepiadeae and Ceropegieae of the subfamily Asclepiadoideae-Apocynaceae. | Authors | E. A. Kamel, S. M. Sharawy and E. A. K. Karakish. ; Ehab Abdel-Razik Kamel | Issue Date | 2014 | Publisher | Pakistan Journal of Botany | Journal | Pakistan Journal of Botany |
Attached Files
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CYTOTAXONOMICAL INVESTIGATIONS OF THE TRIBES ASCLEPIADEAE.pdf | 567.53 kB | Adobe PDF | Request a copy |
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