Abstract

ANDUEZA-NOH, Rubén H.; CAMACHO-PEREZ, Luciana; MARTINEZ-CASTILLO, Jaime  and  MAY-PAT, Filogonio. Geographical distribution of wild relatives of mesoamerican gene pool of lima bean (Phaseolus lunatus L.) in Mexico. Polibotánica [online]. 2016, n.41, pp.101-113. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.41.7.

The Mesoamerican gene pool of wild lima bean (Phaseolus lunatus L., Fabaceae) is an important source of genes for genetic improvement of the species. Is widely distributed from northern Mexico to northern Argentina. Reports in Mexico indicate that this gene pool is distributed from Sinaloa to Chiapas on the Pacific Coast and southern Tamaulipas to the Yucatan Peninsula on the Coast of Gulf of Mexico, as well as, in the Isthmus of Tehuantepec. However, despite the knowledge we have about the distribution of this gene pool, in Mexico there are still collecting gaps and unexplored regions. The objective of this study was to collect wild populations of lima bean in Mexico to know its current distribution and establish management and conservation strategies. To do this, we collected within the natural distribution range of the Mesoamerican gene pool of lima bean in Mexico, with the passport data was designed a geographical distribution map and assessed the conservation status of populations. Results indicated that wild populations of lima bean have a wide geographical distribution localized mainly in tropical deciduous forest and semideciduous and elevations from zero to 2 292 meters. In most wild population collected a low conservation status was observed, in consequence was proposed the development of strategies for in situ and ex situ conservation for wild populations with higher degree of erosion.

Keywords : genetic improvement; erosion; conservation strategies; wild population.

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