Evaluation of mung bean seed viability after exposing to accelerating ageing conditions

Abstract

The current study has bean curried out by exposing Mung bean (Phaseolus aureus Roxb.) seeds to accelerating ageing conditions (45± °C and 100% relative humidity) for 2,4,8 and 14 days.Evaluation of seed vigor was obtained by comparing acceleratedaly aged seeds to un-aged seeds (control). The results were revealed that, accelerating ageing of mung bean seeds had significant inhibition of germination percentage ,up to 4 days .Mean-while, a progressive decline in germination % with increasing ageing period (from 100% in control to 36% after 14 days). However,reduction of germination % was coincided with the reduction of most tested parameters : Germination seed index , seed vigor index , seedling length , seedling fresh and dry wight (shoot and root systems).Althought, accelerating ageing causes increase in moisture content and soluble leakage of seed , but it has no deteriorative effect on membrane integrity in terms of electrical conductivity (permeability perturbation ) at least within the first 4 day. As aconclusion , accelerated ageing caused diminishing of mung bean seed viability according to the above results.