Physiological Evaluation of Wheat (<i>Triticum aestivum</i>L.) Genotypes at Pre-Anthesis Stage under Heat Stress Conditions
Physiological Evaluation of Wheat (<i>Triticum aestivum</i>L.) Genotypes at Pre-Anthesis Stage under Heat Stress Conditions作者机构：Department of Botany University of Azad Jammu & Kashmir Muzaffarabad Azad Kashmir Pakistan Department of Biosciences Quaid Avenue University of Wah Wah Cantt Pakistan Department of Botany University of Science and Technology Bannu Pakistan Department of Agronomy University of Haripur Haripur Pakistan Department of Agronomy University of Florida Gainesville FL USA
出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)
年 卷 期：2021年第12卷第12期
页 面：1780-1790页
主 题：Heat Stress Tolerance Mechanisms Protein Profiling Osmolytes
摘 要：Experiments were conducted to analyze effects of high temperature stress on wheat at pre-anthesis growth stage. Twenty four wheat genotypes exposed to a sub optimal temperature (35°C) which showed altered physiological, biochemical and agronomic characteristics. Accumulation of proline, presence of new protein bands and higher antioxidant enzyme activity in leaves of G.7 and G.17 reflects their better adaptive response under heat stress conditions. G.17 and G.19 showed least reduction in number of spikelets per spike, biological yield and 100 grain weight. It was inferred that the genotypes G.7, G.17 and G.19 exhibited greater heat tolerance and could be recommended for cultivation under heat stress conditions.
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