Effect of some osmoregulators on photosynthesis, lipid peroxidation, antioxidative capacity, and productivity of barley (Hordeum vulgare L.) under water deficit stress

Environmental Science and Pollution Research International
Khaled A A AbdelaalTarek Alshaal

Abstract

Water deficit stress is an abiotic stress that causes reductions in growth and yield of many field crops around the world. The present research was aimed to elucidate the mitigating efficiency of exogenous application of select osmoregulators and biostimulants, i.e., potassium dihydrogen phosphate, actosol® (humic acid), Amino more (amino acids), and Compound fertilizer, applied as a spray that reached both foliage and the soil, on growth characteristics, antioxidant capacity, and productivity of barley (Hordeum vulgare L. Giza123) under water deficit stress during two successive growing seasons of field experiments in Egypt. Water deficit resulted in stress as estimated by stress indicators and decreased growth and poor health and development as reflected in statistically significant decreases in chlorophyll a and b and major nutrient (NPK) levels in tissues, stem length, number of leaves, and fresh and dry mass as well as yield components such as spike length, grains per spike, biological yield, grain yield, and 1000-grain weight. As a response to water deficit stress, reactive oxygen species (ROS, i.e., superoxide and hydrogen peroxide) levels increased significantly resulting in lipid peroxidation and decreased membrane int...Continue Reading

References

Sep 18, 2002·Trends in Plant Science·Ron Mittler
Oct 29, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Long QiuGuoping Zhang
Jul 22, 2014·Journal of Integrative Plant Biology·Honghong WuSergey Shabala
May 8, 2015·International Journal of Molecular Sciences·Manzer H SiddiquiNajat A Bukhari

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Citations

Jun 1, 2021·Frontiers in Plant Science·Tingting LiXiaodong Zheng
Aug 28, 2021·Biomolecules·Miguel BaltazarBerta Gonçalves

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