Journal article

Karyotypic variation in Nicotiana section Suaveolentes

Claire E Marks, Pauline Y Ladiges, Ed Newbigin

GENETIC RESOURCES AND CROP EVOLUTION | SPRINGER | Published : 2011

Abstract

Nicotiana section Suaveolentes (Solanaceae) currently includes 28 species and subspecies that are endemic to Australasia and the South Pacific and one African species, N. africana. The section is monophyletic and of allotetraploid origin, but relationships among the species in it and its diploid progenitors are poorly understood. Here we report chromosome numbers for 20 of the 29 taxa from the Suaveolentes, including a count for one recently proposed species for which no number has previously been available. Many of the published chromosome numbers for the Suaveolentes are confirmed in this study. However, six counts were different from the published numbers including n = 15 for N. maritima ..

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Grants

Funding Acknowledgements

CM acknowledges the receipt of an Australian Postgraduate Award and a Hansjorg Eichler Scientific Research Award from the Australian Systematic Botany Society, and student travel bursaries from the Australian Biological Resources Study, the School of Botany Foundation and the University of Melbourne. Dr Brian Murray (University of Auckland) is thanked for his help and advice with cytology.