Landscape management and domestication of Stenocereus pruinosus (Cactaceae) in the Tehuacan Valley: human guided selection and gene flow
Por:
Parra, F, Blancas, JJ, Casas, A
Publicada:
14 ago 2012
Resumen:
Background: Use of plant resources and ecosystems practiced by indigenous peoples of Mesoamerica commonly involves domestication of plant populations and landscapes. Our study analyzed interactions of coexisting wild and managed populations of the pitaya Stenocereus pruinosus, a columnar cactus used for its edible fruit occurring in natural forests, silviculturally managed in milpa agroforestry systems, and agriculturally managed in homegardens of the Tehuacan Valley, Mexico. We aimed at analyzing criteria of artificial selection and their consequences on phenotypic diversity and differentiation, as well as documenting management of propagules at landscape level and their possible contribution to gene flow among populations. Methods: Semi-structured interviews were conducted to 83 households of the region to document perception of variation, criteria of artificial selection, and patterns of moving propagules among wild and managed populations. Morphological variation of trees from nine
Filiaciones:
Univ Nacl Autonoma Mexico, Ctr Invest Ecosistemas CIECO, Morelia 58190, Michoacan, Mexico
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