Mitigation of adverse effects of heat stress in chillies by using glycine betaine

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Research Paper 01/08/2019
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Mitigation of adverse effects of heat stress in chillies by using glycine betaine

Tanveer Hussain, Choudhary Muhammad Ayyub, Ijaz Ahmad, Irfan Ali, Zaid Mustfa, Adeel Anwar, Aqeel Ahmad, Sohail Latif, Tanveer Iqbal
Int. J. Biosci.15( 2), 1-10, August 2019.
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Chilli (Capsicum spp.) is an important vegetable cum spice crop of the night shade family requiring 20-30 °C optimum temperatures for plant growth and development, usually growth starts retarding below 15°C or above 32°C temperature. Almost all growth stages of chilli plants are influenced by high temperatures ultimately leads to economic yield losses in final crop productivity. The experiment was carried out in growth chamber of mushroom lab, Institute of Horticultural Sciences, University of Agriculture, Faisalabad aiming at identifying the best glycine betaine treatment proved to be useful in coping with adversaries of high temperature stress in chillies. Chilli genotypes named as C-37, Uk-101, H-13 and jawala were grown and sprayed with different concentrations (0, 5, 10, 15 and 20 mM) of glycine betaine at the seedling stage under high temperature stress (40/32ºC day and night temperature) in growth chamber provided with controlled conditions. Various physiological attributes of chilli genotypes were recorded. Glycine betaine application @15mM was best for enhancing the heat tolerance potential of chilli genotypes under heat stress. Glycine betaine has also been proved effective in enhancing the heat tolerance potential under high temperature stress.


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