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EFFECT OF SEED PRIMING ON RESERVE MOBILIZATION, WATER UPTAKE AND ANTIOXIDATIVE ENZYME ACTIVITIES IN GERMINATING SEEDS OF GROUNDNUT UNDER SALINITY STRE
A. PAL, S.K. YADAW, A.K. PAL, S. GUNRI

Published in: International Journal of Agriculture Sciences
Volume- 9, Issue-36, pp.4542-4545, Aug 2017
DPI :-> 16.10077.IJAS.2017.V9I36.45424545.1850



Abstract
An experiment was carried out to study the effect of seed priming on germination behavior, reserve mobilization, solute accumulation and antioxidative enzyme activities in germinating seeds of groundnut under salinity stress. Seeds of groundnut cv.TG-51 were treated with various priming agents viz., gibberellic acid 50 ppm, hydrogen peroxide 60 mM, ascorbic acid 100 ppm, salycilic acid 25 ppm, mannitol 2.5% and sodium chloride 50 mM for 14 hours and were subjected to salinity stress (200mM NaCl). Results indicated that the primed seeds showed significant improvement in germination speed and growth of embryonic axis over the unprimed ones under salinity treatment. This might be attributed to higher water uptake ability and enhanced rate of reserve mobilization because of seed priming before germination. The priming treatments also showed enhanced accumulation of proline along with higher activities of antioxidant enzymes GPOX and CAT and alleviated levels of lipid peroxidation in the embryonic axis which might contribute to osmotic regulation and mitigation of oxidative stress under salinity stress during seed germination. Among all the priming agents, GA3 50 ppm, mannitol 2.5% and NaCl 50mM especially produced encouraging results.

Key-Words / Index Term
Antioxidative enzyme, Groundnut, Reserve mobilization, Salinity stress, Seed priming

How to cite this article
A. PAL, S.K. YADAW, A.K. PAL, S. GUNRI , “EFFECT OF SEED PRIMING ON RESERVE MOBILIZATION, WATER UPTAKE AND ANTIOXIDATIVE ENZYME ACTIVITIES IN GERMINATING SEEDS OF GROUNDNUT UNDER SALINITY STRE”, International Journal of Agriculture Sciences, 9, Issue-36, pp.4542-4545, Aug 2017. DPI:16.10077.IJAS.V9.I36.1850