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KARYOTYPE ASYMMETRY IN GALTONIA AND PSEUDOGALTONIA (HYACINTHACEAE)

Published online by Cambridge University Press:  13 April 2004

L. L. FORREST  and
K. JONG
L. L. FORREST
Affiliation:
Present address: Life Science II, Department of Plant Biology, Southern Illinois University, Carbondale, IL 62901-6509, USA
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Abstract

The karyotype of a recently described species of Galtonia (Hyacinthaceae), G. regalis, is described and its cytotaxonomic relationship to other members of the genus examined. Since conflicting cytological patterns for the genus exist in the literature, the chromosome compositions of the three other species, G. candicans, G. princeps and G. viridiflora, are re-investigated. This study demonstrates that the karyotype of Galtonia is uniformly asymmetrical and distinctively trimodal, with 2n=16. Also included in this investigation is the allied monotypic genus Pseudogaltonia. Its karyotype is also asymmetrical, but differs from Galtonia in its chromosome number of 2n=18, and in certain other features.

Keywords

BimodalityGaltoniaGaltonia regaliskaryotype asymmetryOrnithogalumpolymodalityPseudogaltoniatrimodality
Type
Research Article
Information
Edinburgh Journal of Botany , Volume 60 , Issue 3 , November 2003 , pp. 569 - 579
Copyright
© 2003, Trustees of the Royal Botanic Garden, Edinburgh

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Footnotes

If the generic circumscriptions in Hyacinthaceae, proposed by Manning, Goldblatt & Fay on p. 533 of this issue, are followed, then Galtonia and Pseudogaltonia would be treated as groups of species within an enlarged Ornithogalum.