Alleviating Effect of Foliar Sprayed Paclobutrazol and Salicylic Acid on Biochemical Changes in Mungbean under Cadmium Stress

By : A. Hemantaranjan, Deepmala Katiyar, Jharna Vyas, A. Nishant Bhanu

Page No: 37-44

Abstract
Pot experiments were carried out to assess the extent of cadmium stress-induced biochemical changes in mungbean (Vigna radiata L.) genotype HUM-1 and its alleviating effect in the presence of plant growth regulators salicylic acid (SA) and paclobutrazol (PBZ), at different growth stages. All the treatments showed in improvement of biochemical parameters viz. chlorophyll a, b, carotenoid content, total soluble sugar and enzyme activity NR, SOD, APX etc. Chlorophyll content was found to be drastically reduced under plants exposed to both the levels of Cd stress and devoid of treatment with either of plant growth regulators. Paclobutrazol @ 100 ?M has been found to be more significant in mitigating, Cd stress, as compared to salicylic acid at early as well as late growth stages. The total soluble sugar content increased in plants treated with paclobutrazol @ 50 ?M. In all the other treatments sugar content was found to be lower than control plants, devoid of both Cd stress as well as plant growth regulator application. Paclobutrazol @ 100 ?M has been found to be more significant in mitigating Cd stress, as compared to salicylic acid at early as well as late growth stages. Chlorophyll content was found to be drastically reduced under plants exposed to both the levels of Cd stress and devoid of treatment with either of plant growth regulators.

Authors :
A. Hemantaranjan, Deepmala Katiyar and Jharna Vyas : Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
A. Nishant Bhanu : Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, India.
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