A comparison of chromosome number and karyotype in somatic chromosomes of Stangeriaceae (Cycadales)

Kokubugata, G., Hill, K.D., Wilson, G.W., Kondo, K., and Randall, L.M. (2001) A comparison of chromosome number and karyotype in somatic chromosomes of Stangeriaceae (Cycadales). Edinburgh Journal of Botany, 58 (3). pp. 457-481.

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Abstract

Somatic chromosomes at mitotic metaphase of two species and two undescribed populations of Bowenia, and Stangeria eriopus, which were classified in Stangeriaceae, Cycadales, were compared using the standard aceto-orcein staining method. All Bowenia taxa showed a chromosome number of 2n = 18, while S. eriopus showed a chromosome number of 2n = 16. The chromosome number of 2n = 18 in B. 'Kuranda' is reported for the first time. The present karyotype analysis indicates that B. 'Kuranda' and another undescribed taxon, B. 'Tinaroo', are cytotaxonomically closer to B. spectabilis than B. serrulata, and that the karyotype of Stangeria is unlikely to have been derived from that of Bowenia by a simple chromosomal change such as centromeric fission and deletion.

Item ID: 24602
Item Type: Article (Non-Refereed Research)
ISSN: 1474-0036
Keywords: chromosome; Cycadales; cytotaxonomy; Stangeriaceae
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Reproduced with permission from Cambridge University Press.

Date Deposited: 18 Jan 2013 03:51
FoR Codes: 06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060702 Plant Cell and Molecular Biology @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960806 Forest and Woodlands Flora, Fauna and Biodiversity @ 100%
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