Chromosome Numbers and Genetic Systems in the Trigger Plants of Western Australia (Stylidium; Stylidiaceae)
- 1 January 1979
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Botany
- Vol. 27 (1), 17-25
- https://doi.org/10.1071/bt9790017
Abstract
Chromosome numbers for 116 taxa of the genus Stylidium in south Western Australia are reported. The primitive number is n = 15, but haploid numbers ranging from 5 to 16 occur, with polyploidy on 13, 14 and 15. This dysploid variation is associated with a widespread occurrence of recessive lethal factors which eliminate most of the products of self-pollination at or soon after fertilization while permitting a majority of the cross-pollination products to survive.Keywords
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