Journal of Food, Agriculture and Environment

Effects of water deficit on nutrient content and grain protein of bread wheat genotypes

Author(s):

Mohammad Rezaei ¹, Saeid Zehtab-Salmasi ^1*, Nosratollah Najafi ¹, Kazem Ghassemi-Golezani ^1*, Mohammadreza Jalalikamali ²

Recieved Date: 2010-07-20, Accepted Date: 2010-11-03

Abstract:

Plant nutrient uptake from the soil is dependent on soil moisture, fertilizers applied, soil chemicals and some other environmental factors. The objective of this study was to gain a better understanding of how water deficit affects grain yield and quality of bread wheat genotypes. Two field experiments were conducted at the Agriculture Research Station of Miandoab in West Azarbayjan during 2007-2008 and 2008-2009 to examine the effects of water supply (irrigation after I₁=70, I₂=100, I₃=130 and I₄=160 mm evaporation from Class-A pan) on macronutrients concentrations, protein content and grain yield in 10 winter wheat genotypes (Zarrin, Alvand, Shahryar, Sardari, C-80-4, C-81-10, C-81-4, C-83-3, C-83-8 and C-84-9). Irrigation and genotypes showed significant differences in grain yield, protein and macronutrients concentrations. Grain yield and grain macronutrients concentrations (K, Ca and Mg) in all genotypes decreased, but protein and P concentrations of grains increased with decreasing water availability. Macronutrients such as N, P and Ca in shoots decreased, but K and Mg increased as water supply limited. These results suggest that wheat genotypes respond differentially to water deficit and macronutrients. The highest grain yield per unit area under well-irrigation and severe water deficit was obtained for Zarrin and C-84-9 genotypes, respectively.

Keywords:

Grain yield, macronutrient, protein content, water deficit, wheat genotypes

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Agriculture
Pages: 535-539

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