biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 45:445-448, 2002 | DOI: 10.1023/A:1016286121451

Effect of Growth Regulators on Photosynthetic Metabolites in Cotton under Water Stress

D.M. Pandey1, C.L. Goswami1, B. Kumar1, S. Jain1
1 Department of Botany and Plant Physiology, Chaudhary Charan Singh, Haryana Agricultural University, Hisar, India

The contents of several photosynthetic metabolites - 3-phosphoglyceric acid (3-PGA), pyruvate, nicotinamide adenine dinucleotide phosphate (NADP) and adenosine triphosphate (ATP) - were determined in leaves of cotton plants (Gossypium hirsutum L. cv. H-777) subjected to waterlogging at vegetative stage, and/or drought at the reproductive stage. In controls, soil moisture contents was kept at field capacity. One day prior to stress, the plant shoots were sprayed with 5 μM aqueous solution of indole-3-acetic acid (IAA), gibberellic acid (GA3), benzylaminopurine (BAP), abscisic acid, and ethrel. In control plants, various growth regulators reduced contents of 3-PGA and ATP while increased contents of NADP and pyruvate. During waterlogging IAA promoted 3-PGA content, and BAP enhanced pyruvate content. During drought, GA3 enhanced ATP and 3-PGA contents, while IAA enhanced pyruvate content.

Keywords: adenosine triphosphate; Gossypium hirsutum; nicotinamide adenine dinucleotide phosphate; 3-phosphoglyceric acid; pyruvate
Subjects: abscisic acid; auxins; cotton, photosynthates, water stress; cytokinins; gibberelins; Gossypium hirsutum; photosynthates, growth regulators, water stress; water stress, photosynthates, growth regulators

Published: September 1, 2002  Show citation

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Pandey, D.M., Goswami, C.L., Kumar, B., & Jain, S. (2002). Effect of Growth Regulators on Photosynthetic Metabolites in Cotton under Water Stress. Biologia plantarum, 45(3), 445-448. doi: 10.1023/A:1016286121451
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