Effects of plant regulators on carbohydrate contents in cotton (Gossypium hirsutum L. cv. 'IAC-17')

Abstract

This research deals with the effects of exogenous growth regulators on dry weight, water contents, soluble carbohydrates, and reducing sugars contents of cotton plants. To study the influence of the chemicals, cotton seeds were immersed during 22 hours in water solutions of (2-chloroethyl) trimethylammonium chloride (CCC) at concentration of 2000 ppm, succinic acid -2,2-dimethylhydrazide(SADH) 4000 ppm, gibberellic acid (GA) 100 ppm, indolylacetic acid (IAA) 100 ppm, and water as check treatment. CCC 2000 ppm reduced the dry weight and increased the water contents in the foliage (leaves) of cotton plants. This growth retardant reduced the soluble carbohydrates contents in the plant foliage. Gibberellic acid 100 ppm promoted increases in reducing sugars contents in cotton plants and IAA 100 ppm caused reduction in reducing sugars contents.