Salt Stess On Soybean Glycine Max L Merr Improving Salt Stress Tolerance Through Seed Priming

Soybean seeds rapidly deteriorate or loss of viability and vigor especially in stress conditions including by saline. This study was aimed to obtain the best seed viability and vigor of soybean treated by seed priming under salt stress. This study used a randomized completely block design with factorial pattern. First factor was the saline stress of NaCl concentration C which consisted of three levels c0 0 0.5 c1 c2 1.Second factor was the treatment of seed priming P that consisted of 4 levels p0 hydropriming p1 osmopriming p2 matripriming p3 vitamin priming. The experiment was repeated three times. Data collected consisted of germination capacity germination rate hypocotyl and epicotyl length the weight of seedling and the electrical conductivity. Data were analyzed by analysis of variance followed by Duncans multiple range test at 5 percent. The results showed that osmopriming matripriming and vitamin priming improved total germination and germination rate of soybean seeds under salinity stress while seed priming with hydropriming caused significantly the reduction of germination total and germination rate in salinity stress of 1 percent. Increased salinity stress from 0 to 1 percent caused a reduction in hypocotyl and epicotyl length different with osmopriming matripriming and vitamin priming that produced hypocotyl and epicotyl longer than hydropriming. In all seed primings increased salinity stress from 0 to 1 percent lowered the weight of seedlings and most drastic reduction of seedling weight occurred in seeds treated with hydropriming. Among seed priming treatments osmopriming matripriming and vitamin priming were more able to reduce membrane leakage compared to hydropriming as indicated by lower electrical conductivity rates contributing the increase in tolerance to salt stress and high in seed viability and vigor.