Physiological Evaluation of Wheat (<i>Triticum aestivum</i>L.) Genotypes at Pre-Anthesis Stage under Heat Stress Conditions  

作　　者：Munazza Nazir Asghari Bano Faizan Ullah Samiullah Khan Naeem Khan Munazza Nazir;Asghari Bano;Faizan Ullah;Samiullah Khan;Naeem Khan(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)

机构地区：[1]Department of Botany, University of Azad Jammu & Kashmir Muzaffarabad, Azad Kashmir, Pakistan [2]Department of Biosciences, Quaid Avenue University of Wah, Wah Cantt, Pakistan [3]Department of Botany, University of Science and Technology, Bannu, Pakistan [4]Department of Agronomy, University of Haripur, Haripur, Pakistan [5]Department of Agronomy, University of Florida, Gainesville, FL, USA

出　　处：《American Journal of Plant Sciences》2021年第12期1780-1790,共11页美国植物学期刊（英文）

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.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.

关 键 词：Heat Stress Tolerance Mechanisms Protein Profiling OSMOLYTES 

分 类 号：S51[农业科学—作物学]