Impact of Salt Stress (Nacl) on Seed Germination, Photosynthetic Pigments of Green Gram Cultivars of Co6 and Co8

Investigations were undertaken to study the impact of salt stress (NaCl) in concentrations on seed germination and seedling growth of Green gram (CO5, CO6). Seed germination percentage, seedling growth characters, physiological and bio-chemical parameters were estimated at 10 days after sowing in Petridish. The stress was imposed during sowing time with different concentrations viz., 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ppm. The increased seed germination percentage was noticed in control (distilled water) treated seeds and very less reduction was observed in T 2 to T 5 treatments in the range of 11.2 percent over the T 11 . The highest reduction percent of 35% were observed in T 10 , T 11 , & T 12 treated seeds. Growth parameters of shoot length and root length were significantly reduced due to NaCl treatments. However among the treatments, T 1 - T 5 showed very less reduction 15 percent than the other treatments, whereas T 6 -T 11 recorded highest reduction of 27 percent over control. There was also significantly maintained in the chlorophyll ‘a’ ‘b’ and total chlorophyll content of the seedlings in the T 1 -T 5 treatments as 12.6 %, with lesser reduction over the other treatments. The highest reduction of 25.3 percent was noticed in T 6 -T 12 treated seedlings.