Effect of seed hardening on morpho-physiological characters in Mung bean (Vigna radiata L.)

Abstract

The present investigation was carried out to study the effect of seed hardening on morpho-physiological characters in mung bean. The mung bean var. GAM-5 was imposed with seed hardening treatments viz., 2% CaCl2, 500 ppm Cycocel, 1000 ppm Cycocel, 25 ppm NAA, 50 ppm NAA, water soaked control and absolute control. The treated seeds along with control were evaluated for their seed morpho-physiological characters under laboratory condition. The study revealed that seeds hardened with CaCl2 @ 2% recorded higher germination per cent, root, shoot and seedling length, root, shoot and seedling dry weight and seed vigour index I. Seed hardened with 50 ppm NAA reported higher root dry weight and root to shoot ratio on dry weight basis while Cycocel 1000 ppm treatment recorded higher root to shoot ratio on length basis. The treatments CaCl2 2% followed by Cycocel 1000 ppm were found to be superior as compared to other treatments and control on the basis of lab studies.