Atributos de qualidade de sementes salvas de trigo na safra 2016/17

Abstract

The pursuit of reducing costs for the implantation of wheat crops, has been leading producers to use saved seeds, which often with unknown physical and physiological quality. Aiming to know the characteristics of the seeds used in planting crops, the work aimed to compare physical and physiological components of Wheat-saved seeds produced by family producers of the municipalities of Planalto, Perola D´Oeste and Pranchita, in southwestern Paraná, In relation to commercial seeds. The seeds Were Collected In properties. The seeds were collected on properties that stored seeds of the 2015/2016 crop to reduce costs in the implantation of the crop in the 2016/2017 crop. The seed analysis was performed at the UTFPR-DV Seed Analysis Laboratory. Tests of purity, hectoliter weight, moisture and weight of one thousand seeds were carried out to evaluate the physical components. Germination test, electrical conductivity and cold test for the physiological components. The obtained data were analyzed through the analysis of variance, and the means compared by the Tukey test. The seeds saved had similar results for the physical components. The commercial lots presented lower number of dead seeds for the two cultivars evaluated. The seeds saved presented discrepant values for electrical conductivity in relation to the commercial ones. For the cultivars object of the present study, the applied tests did not indicate significant differences in the quality of the seeds with respect to their origin.