Caracterização morfofsiológica de sementes de diferentes cultivares de soja armazenadas sob condições não controladas

Abstract

It is of fundamental importance the use of quality seeds to getting uniformity, vigorous plants and, therefore, good productivity. The quality of soybean seeds, directly related to the physical, genetic, sanitary and physiological attribu-tes, was the objective of this study to evaluate the morphophysiological characteristics and seed quality of different soybean cultivars stored during three months under uncontrolled conditions. Twenty - four soybean cultivars were evaluated in a completely randomized design with respect to the physical and morphological classification of 100 seeds, moisture, peroxidase test, germination, vigor and dry mass of the root and hypocotyl. After storage under uncontrolled conditions the cultivar NS5959IPRO showed a higher percentage of vigor and germination (99%) and a higher weight of dry mass of hypocotyl. Of the 24 evaluated cultivars, 14 meet the minimum quality limit of seeds for commercialization even under uncontrolled storage conditions regarding temperature and humidity of the air.