Authors' addresses: Dr. L. Prakash and Dr. G. Pkathapasenan, Plant Physiology Laboratory, Department of Botany, Faculty of Science, The Maharaja Sayajirao University of Baroda, Baroda, India, and Dr. Ujwala T. Acharya, Department of Botany, St. Xavier's College, Mahapalika Marg, Bombay 400001, India.
Effect of Gibberellic Acid on Seedling Growth and Carbohydrate Metabolism During Germination of Rice (Oryza sativa L. var. GR-3) Under Saline Condition
Version of Record online: 22 APR 2008
Journal of Agronomy and Crop Science
Volume 165, Issue 1, pages 6–13, August 1990
How to Cite
Acharya, U. T., Prakash, L. and Prathapasenan, G. (1990), Effect of Gibberellic Acid on Seedling Growth and Carbohydrate Metabolism During Germination of Rice (Oryza sativa L. var. GR-3) Under Saline Condition. Journal of Agronomy and Crop Science, 165: 6–13. doi: 10.1111/j.1439-037X.1990.tb00828.x
With 3 figures and one table
- Issue online: 22 APR 2008
- Version of Record online: 22 APR 2008
- Received July 20, 1989; accepted October 10, 1989
- Oryza sativa;
Interactive effect of NaCl salinity and gibberellic acid (GA3) on seedling growth and carbohydrate metabolism of rice was studied for five days. NaCl reduced the embryo axis growth and the rate of hydrolysis of starch in the endosperm. Parallel to this reduced rate of reserve carbohydrate mobilization, a decreased activity of α-amylase, β-amylase, maltase and invertase was also found in the endosperm of sale stressed seeds. Presoaking treatment of seeds with GA3 (10 mg l−1), however, increased the growth of seedlings and enhanced the hydrolysis of starch as well as the activities of said enzymes. Electrophoretic analysis revealed that NaCl inhibits the synthesis of amylase isozymes which, in turn, reversed considerably by GA3 application.