Seleção de genótipos de soja tolerantes às condições edafoclimáticas do cariri paraibano como suporte à caprinocultura leiteira.

Abstract

The Paraiban Cariri region has limitations agricultural activities due to high soil salinity and irregular rainfall and water deficits that cause the phenomenon of drought. In this context, the soybean breeding allow its cultivation under semiarid conditions, which implies the reduction of transport costs to other regions of the country, traditionally producing this legume rich in protein. This work has been characterized as a first stage of breeding, and aimed to identify soybean genotypes better adapted to abiotic stresses of Cariri, especially with regard to salinity. Initially 150 genotypes were tested in greenhouse under salinized substract artificially. Then, the materials that stood out were laboratory tested for various parameters according to the Rules for Testing Seeds (RTS). Based on previous steps, five genotypes were selected as most promising, which were plotted in the field for germination tests. In this last step were obtained germination percentages above 80%. Potentially, the intent of this research in the coming years will foster a positive economic impact to the goats creators of the Paraíba.