Physiological potential of mung bean seeds under boron doses and storage periods

Abstract

The objective was to evaluate the physiological potential of mung bean seeds in response to doses and times of boron application, in different storage periods. The experimental design was completely randomized in a 3x5x4 factorial scheme, with four replications, with three phenological stages of application (V₀, V₉ and R₁), five doses (0; 1.0; 1.5; 2.0; 2.5 kg ha^-1) of boron and four storage periods (0, 3, 6 and 9 months) in an uncontrolled environment. The physiological potential of seeds was evaluated by germination tests, first count, accelerated aging, electrical conductivity, length, dry mass and mass of a thousand seeds. The dose of 1.0 kg ha^-1 of boric acid, applied at the V₀ stage, provides seeds with high physiological potential, which can be stored for 6 months. At 9 months of storage, the physiological potential of mung bean seeds is reduced and shows a loss of vigor.