Original Research

Meiotic chromosome behaviour in Cenchrus ciliaris

N. C. Visser, J. J. Spies
Bothalia | Vol 28, No 1 | a623 | DOI: https://doi.org/10.4102/abc.v28i1.623 | © 1998 N. C. Visser, J. J. Spies | This work is licensed under CC Attribution 4.0
Submitted: 02 October 1998 | Published: 02 October 1998

About the author(s)

N. C. Visser, Department of Botany and Genetics, University of the Orange Free State, South Africa
J. J. Spies, Department of Botany and Genetics, University of the Orange Free State, South Africa

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Abstract

A basic chromosome number of x = 9 has been confirmed for Cenchrus ciliaris L. Polyploidy is common and levels vary from tetraploid to hexaploid. Aneuploidv is reported for a single specimen, where two chromosomes of a single genome were lost. Various meiotic irregularities were observed. The highest incidence of meiotic abnormalities was observed in the pentaploid specimens. This was attributed to their uneven polyploid level All specimens varied from segmental alloploid to alloploid.


Keywords

<i>Cenclirus ciliaris</i>; chromosomes; meiosis. Panicoideae; Poaceae. polyploidy

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