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1 December 2007 Genetic Variation in Vanilla planifolia (Orchidaceae)
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Abstract

Vanilla planifolia, a highly prized tropical crop, produces commercial vanilla. We investigated RAPD genetic diversity and geographical structure within V. planifolia. Multivariate analyses revealed three separate geographical groups of V. planifolia: a) a Costa Rican group; b) a Mexican group consisting only of cultivated plants from north of the Trans-Mexican Volcanic Belt; and c) a Mexican group from Oaxaca, Chiapas, and Quintana Roo, which are wild and wild-sourced cultivated plants. It appears likely that human action has resulted in movement of northern Mexican plants into the region south of the Volcanic Belt. When supposed translocants are included, a significantly higher genetic diversity is observed south of the Volcanic Belt compared to northern Mexico. Furthermore, cultivar names used in V. planifolia do not appear to reflect genetically defined groups.

Philipp M. Schlüter, Miguel A. Soto Arenas, and Stephen A. Harris "Genetic Variation in Vanilla planifolia (Orchidaceae)," Economic Botany 61(4), 328-336, (1 December 2007). https://doi.org/10.1663/0013-0001(2007)61[328:GVIVPO]2.0.CO;2
Received: 12 August 2007; Accepted: 1 August 2007; Published: 1 December 2007
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