Resumo

HECK, Monica I. et al. Evaluation of the agromorphological variability of maize landraces in Misiones, Argentina. Rev. cienc. tecnol. [online]. 2020, n.33, pp.1-10. ISSN 1851-7587.

Maize landraces present a great socio-economic relevance within the family farming systems in the province of Misiones. The losses of customs and traditions related to their use, endanger their conservation. In order to provide knowledge about the local genetic variability, conservation, valorization and utilization of these resources, 16 native populations, which belong to different origins and collection dates were studied by agromorphological descriptors. These findings allow us to conclude that (1) the evaluated native populations, hold significant levels of genetic variability, (2) the identity of races within each origin is maintained, and (3) there is a tendency to increase productivity in the current collections. On the one hand, these results highlight the existence of geographical and cultural barriers that preserve the ideotype and, on the other hand, the dynamic nature of conservation that has to undergo processes of selection, substitution and/or genetic introgression.

Palavras-chave : Maize; Genetic resources; Native populations; Genetic variability; Conservation.

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