VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

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Research Article, Vegetos Vol: 30 Issue: 1

Sulfhydral Compounds Mitigate the Adverse Effect of High Temperature Stress in Contrasting Wheat Genotypes

Agarwal VP1*, Gupta NK1, Gupta PC2, Rizwan M1 and Singh G1
1Plant Biotechnology Centre, S K Rajasthan Agricultural University, Bikaner, Rajasthan, India
2Agricultural Research Station, S K Rajasthan Agricultural University, Bikaner, Rajasthan, India
Corresponding author :Vishnu Prakash Agarwal
Plant Biotechnology Centre, S K Rajasthan Agricultural University, Bikaner, Rajasthan, India
Tel: 09460192043
E-mail: vishnuprakash.agarwal@rediffmail.com
Received: September 09, 2016 Accepted: October 18, 2016 Published: February 22, 2017
Citation: Agarwal VP, Gupta NK, Gupta PC, Rizwan M, Singh G (2017) Sulfhydral Compounds Mitigate the Adverse Effect of High Temperature Stress in Contrasting Wheat Genotypes. Vegetos 30:1. doi: 10.5958/2229-4473.2017.00018.0

Abstract

Sulfhydral Compounds Mitigate the Adverse Effect of High Temperature Stress in Contrasting Wheat Genotypes

The experiment was conducted to investigate the role of foliar sprays of thiourea (500,1000 ppm), thioglycolic acid (100,200 ppm) and dithiothreitol (25,50 ppm) under high temperature stress on physiology, growth and productivity of heat tolerant (Raj 4083) and heat susceptible (PBW 373) wheat genotypes. These genotypes were sown on 15th November (normal) and 15th December (heat stress) in field conditions under standard package and practices. The sulfhydral compounds were sprayed at jointing (45 DAS) and anthesis (60 DAS) stages. Results showed that photosynthetic parameters, water status, membrane stability index, pigment contents and yield reduced significantly under temperature stress conditions in both the genotypes. The foliar application of thiourea, thioglycolic acid and dithiothreitol increased or maintained these parameters efficiently in tolerant as well as susceptible genotypes. The heat susceptibility index decreased whereas heat tolerance index increased on account of sulfhydral spray. It is concluded that the foliar application of thiourea, thioglycolicacid and dithiothreitol improved the production potential of wheat genotypes under stress conditions; however, the application of dithiothreitol 50 ppm performed the best for mitigating the adverse effects of high temperature stress in wheat....

Keywords: Thiourea; Thioglycolic acid; Dithiothreitol; Temperature stress; Wheat

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