QUALIDADE FISIOLÓGICA DE SEMENTES DO CULTIVAR DE SOJA 5T797IPRO SOB ARMAZENAMENTO EM AMBIENTE REFRIGERADO E NÃO REFRIGERADO

Abstract

During the storage period, seeds are subject to losses of physiological vigor caused by adverse conditions arising from the environment where they are stored. Thus, in the present work, the objective was to analyze the physiological behavior of the grow crops 5T797IPRO stored in different environments for three periods of storage. The experiment was carried out at the Seed Laboratory of the IF Goiano – Campus Rio Verde, with a completely randomized design. Germination tests, emergence speed index, emergence, electrical conductivity and accelerated aging were performed. The results express losses of germinative vigor with the increase of the storage period for two considered environments; there is a linear increase in the number of abnormal seedlings for longer periods of storage, being higher for seeds that were stored in a natural environment. For accelerated aging, greater drops in vigor were observed for seeds kept in uncontrolled environments. The final percentage of emergence decreases when storage periods increase. Electrical conductivity exposes a greater ion leaching to seeds from storage in an uncontrolled location, describing a biochemical disorganization from fermentation that occurs in greater amounts in seeds that are stored in non-refrigerated environments. The mean time to germination increases linearly in response to longer storage periods. Grow crops 5T797IPRO maintains physiological vigor when kept in a controlled environment, and reduces regulatory quality in an uncontrolled environment.