Vol. 16 No. 2
A review on conventional and molecular breeding approaches for exploring mechanisms underlying heat stress tolerance in wheat
Author(s): A. CHATTERJEE, T. CHATTOPADHYAY, A. MAJI, P. SEN AND M. N. ALI
Abstract: Wheat is one of the primary foods for more than 40 countries and for over 35% of the global population. The increased temperature during reproductive phase known as heat stress has emerged as a serious problem. Constant or transitory high temperatures may affect the plant growth and development which may lead to diverse morphological, physiological and biochemical changes in plants ultimately decrease in yield. Every 1°C rise in temperature above 28°C during grain filling, results in yield reduction by 3-4 %. To combat, the breeding for crops with enhanced heat tolerance is of pivotal importance to ensure global food security. The understanding of the mechanisms of the heat tolerance at the reproductive stage is the prerequisite for inducing toreance in wheat in particular. During recent past, a lot of information has been generated on classical as well as molecular breeding approaches. The present review aims to summarize those published data to give an insight into the underlying mechanism of heat stress tolerance in wheat.
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