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Andrew Clarke

Doctor of Philosophy, (Plant Biology)
Study Completed: 2009
College of Sciences

Citation

Thesis Title
Origins and Dispersal of the Sweet Potato and Bottle Gourd in Oceania: Implications for Prehistoric Human Mobility

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Mr Clarke used molecular genetic techniques to determine the origins of the sweet potato (kumara) and the bottle gourd in Oceania. Both are thought to have been introduced into Oceania by Polynesian voyagers who collected them from South America about 1,000 years ago (the word kumara is used by indigenous South Americans). Using new and improved DNA techniques, Mr Clarke analysed several hundred varieties of sweet potato and about 40 varieties of bottle gourd. The results are consistent with a pre-European introduction of these crops into Polynesia from South America, and have revealed something about their dispersal patterns within Polynesia, including New Zealand.

Supervisors
Distinguished Professor David Penny
Professor Peter Lockhart
Dr Elizabeth Matisoo-Smith
Dr John McCallum

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