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Fave. Sección ciencias agrarias

versión impresa ISSN 1666-7719

Resumen

PENSIERO, J. F  y  ZABALA, J. M. Recursos fitogenéticos forrajeros nativos y naturalizados para los bajos submeridionales: prospección y priorización de especies para planes de introducción a cultivo. FAVE. Secc. Cienc. agrar. [online]. 2017, vol.16, n.1, pp.67-98. ISSN 1666-7719.

Submeridional Lowlands region is a large area covering 5 millions of hectare in Santa Fe, Chaco and Santiago del Estero provinces. Extensive cattle raising is the most important economic activity in the Submeridional Lowlands region. The main constraints of forage production are soil salinity and alternating flooding and drying cycles. Preserving grasslands that support commercial beef cattle production and the use of native and naturalized forage species to increase quantity and quality of forage become necessary. The flora of Submeridional Lowlands region contains a significant number of species that must be considered as forage genetic resources. This work examines different aspects to consider in breeding programs of native and naturalized forage species in the Submeridional Lowland Region. References about the identification and characterization of promissory species are scarce. We propose a list the native y naturalized species, which in our opinion, are important forage genetic resources. We discuss criteria of prioritization of the forage species in breeding programs and review successful examples of use of native and naturalized forage genetic resources in Argentina. We highlight keys aspects related with the interdisciplinary works, participatory plant breeding and public funding needs for conservation of native and naturalized plant genetic resources.

Palabras clave : Genetic resources; Natural pastures; Germplasm; Salinity tolerance.

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