Original Research

Cytogenetic studies in some representatives of the subfamily Pooideae (Poaceae) in South Africa. 1. The tribe Aveneae, subtribe Aveninae

J. J. Spies, S. K. Spies, S. M. C. van Wyk, A. F. Malan, E. J. L. Liebenberg
Bothalia | Vol 26, No 1 | a690 | DOI: https://doi.org/10.4102/abc.v26i1.690 | © 1996 J. J. Spies, S. K. Spies, S. M. C. van Wyk, A. F. Malan, E. J. L. Liebenberg | This work is licensed under CC Attribution 4.0
Submitted: 08 October 1996 | Published: 08 October 1996

About the author(s)

J. J. Spies, Department of Botany and Genetics, University of the Orange Free State, South Africa
S. K. Spies, Department of Botany and Genetics, University of the Orange Free State, South Africa
S. M. C. van Wyk, Department of Botany and Genetics, University of the Orange Free State, South Africa
A. F. Malan, Department of Botany and Genetics, University of the Orange Free State, South Africa
E. J. L. Liebenberg, National Botanical Institute, South Africa

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Abstract

This is a report on chromosome numbers for 14 species of the subtribe Aveninae. which is largely naturalized in South Africa. This is the first chromosome number report for Helictotrichon longifolium (Nees) Schweick. (n = 14). H. longum (Stapf)Schweick. (n = 14). H. namaquensis Schweick. (n = 14) and Lophochloa cristata (L.) Hyl. (n = 7, 21/2. 14). The subtribe has a basic chromosome number of seven, and fewer ploidy levels occur in the naturalized species in South Africa than in the same species in other parts of the world. All tetraploid specimens were alloploids.


Keywords

Aveneae; chromosomes; meiosis; Poaceae; polyploidy; Pooideae

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