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Effect of Drought Stress and Using Zeolite on Some Quantitative and Qualitative Traits of Three Maize Varieties

Author Affiliations

  • 1College of Agriculture, Shahr-e-Rey Branch, Islamic Azad University, Tehran, IRAN
  • 2 Seed and Plant Improvement Institute, Karaj, IRAN

Res. J. Recent Sci., Volume 4, Issue (2), Pages 1-7, February,2 (2015)


In order to study of the effects of drought stress and using zeolite on three maize varieties, an experiment was conducted in Seed and Plant Improvement Institute in Karaj, Iran in 2011. The experiment laid out as split plot in randomized complete block design with three replications. Treatments included three irrigation levels as main plots (irrigation after 70, 100 and 130 mm evaporation from standard class A evaporation pan), application of zeolite in two levels as sub plots included using 10 ton/ha zeolite and control (not using zeolite) and three maize varieties as sub sub-plot (Hybrids; SC704, SC705 and SC720). Among evaluated quantitative traits, drought stress led to decrease plant height, ear yield, forage yield and dry matter. The highest and lowest forage yield with averages 54.7 and 31.9 ton/ha resulted from normal and severe drought stress conditions, respectively. Drought stress reduced chlorophyll content of leaves significantly. Zeolite had significant effect on the morphological traits and using it increased forage yield about 9.42 percent in compare to control treatment. Using zeolite also had a significant increasing effect on chlorophyll content. SC720 had higher forage yield than two other varieties.


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