INFLUENCE OF SEED TREATMENT OF GROWTH REGULATORS ON SOME ENZYME ACTIVITY IN GROUNDNUT UNDER SALINITY

SENTHIL A., DJANAGUIRAMAN M., VIJAYALAKSHMI C.

Abstract
An experiment was conducted to study the effect of growth regulators on IAA oxidase, peroxidase and NRase activities in groundnut under different salinity levels. The results indicated that the treatments of seeds with GA3 and IAA solutions reduced the activity of IAA oxidase and increased the activity of peroxidase and NRase enzymes. Under high salinity levels (12 dS/m) IAA oxidase activity is more so the growth and development of crop is affected. From the results it is inferred that the seed treatment of GA3 and IAA overcome the effects of salinity on the activities of enzymes.

Key words:
salinity, growth regulators, IAA, GA3, enzyme activity.

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