Abstract
Alphatocopherol is a vitamin and antioxidant compound that plays a crucial role in amelioration of biotic and abiotic stresses and protects plants from stress – induced cellular oxidation .The experiment was carried out in a green garden of the Department of Biology, College of Education for Pure Sciences Ibn-AL-Haitham ,University of Baghdad during 2018 – 2019 to evaluate the potential effects of foliar application with (0 ,50 ,100 ,150 ,200 mg.L-1) alphatocopherol on growth, yield components and the activity of antioxidant system of wheat plant under sodium chloride stress(0 ,75 , 150 ,225mM.L-1) .Results indicated that sodium chloride caused reduction in shoot dry weight and some yield components (biological yield , no. spikelet .spike-1 and 1000 grain weight)and a significant increase in the endogenous proline acid and alphatocopherol concentration and raised catalase activity. Foliar spray of alphatocopherol improved salt stress tolerance in wheat plant by increasing all the parameters.
Highlights
Wheat (Triticum aestivum L.)is one of the most strategic crops in the world grains production, and is consumed as the main food by more than 36% of world population, wheat productivity is adversely affected by salinity stress[1]
We aim to evaluate the extent to which wheat plant AL-Baraka cultivar can overcome sodium chloride stress and determine the alphatocopherol concentration that minimizes the harmful effect of salinity stress
The experiment was conducted in a green garden of the Department of Biology,College of Education for Pure Sciences, Ibn-AL-Haitham, University of Baghdad, during the growth season 2018-2019 to a access the influence of alphatocopherol (0,50,100,150,200 mg.L-1)as a foliar spray on wheat plant c.v
Summary
Wheat (Triticum aestivum L.)is one of the most strategic crops in the world grains production, and is consumed as the main food by more than 36% of world population, wheat productivity is adversely affected by salinity stress[1]. Salinity is a major threat and global problems that negatively affect crops productivity. It impairs plant growth and development through water stress caused by an osmotic imbalance and ion toxicity due to uptake of ions such as sodium and chloride , and nutritional imbalance[2,3]. Plants are subjected to variety of abiotic and biotic stresses such as salinity which trigger oxidative stress within plant cells due to the high leakage of the electrons toward oxygen molecule during the metabolic processes of photosynthesis and respiration. Plants have developed a defense system that protects the cell and limits the oxidative stress. This system includes enzymatic and non- enzymatic antioxidants[4]
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