Effects of Iron and Zinc Spray on Yield and Yield Components of Wheat (Triticum Aestivum L.) in Drought Stress

Abstract

In hot and arid regions, drought stress is considered as one of the main reasons for yield reduction. To study the effect of drought stress, iron and zinc spray on the yield and yield components of wheat, an experiment was carried out during the crop seasons of 2010 and 2011 on Shahid Salemi Farm in Ahwaz as a split factorial within randomized complete block design with three replications. The main plots with irrigation factor and three levels were considered: Level A) full irrigation, Level B) stopping irrigation at pollination step, and Level C) stopping irrigation at the seed filling stage. Subsidiary plots were considered with and without iron and zinc spray. Influencing the seed filling process, in interaction with iron, wich is an important leaf's chlorophyll cation, zinc increased the seed yield. The drought stress reduced the thousand kernels weight (TKW) and the number of seeds per spike increased about 24% and 8.5% more than the one of control treatment, respectively. Using iron, as compared with control treatment, causes the increase of thousand kernels weight from 45.71 to 46.83 grams and the increase of spike from 49.51 to 51.73. Zinc spray increased seed yield and thousand kernels weight. The results obtained from the present research showed that iron and zinc spray has fairly improved the effects caused by drought stress.

Yield response of wheat cultivars to zinc application rates and methods

“…In case of various Zn levels, Zn applied at the rate of 10.50 Zn kg ha -1 resulted in maximum thousand grain weight (51.26 g) followed by Zn level at the rate of 7.00 kg ha -1 and 3.50 kg ha -1 with 1000 grains weight of (43.59 and 36.30 g) respectively while minimum thousand grain weight (30.00 g) was recorded from control plot. Our result is in agreement with the finding of [40][41][42] who also find out that zinc has improved water and nutrients availability to roots and consequently increased 1000 grains weight (g). Zn application as a ide dressing resulted in higher 1000 grains weight (41.11 g) which was statistically similar with Zn application with seed method with mean value of (40.86 g) and lowest thousand grain weight (39.64 g) was recorded in broadcast method of Zn application.…”

Acquisition and Homeostasis of Iron in Higher Plants and Their Probable Role in Abiotic Stress Tolerance

“…Due to the scarcity of water resources, drought is recognized as one of the single most critical threats to world food security (Abolhasani and Saeidi, 2004;Lambers et al, 2008;Farooq et al, 2009Farooq et al, , 2012Moghadam et al, 2011;Monjezi et al, 2013;Pourgholam et al, 2013). It harms plant growth and development and reduces the growth rates of crop and biomass accumulation.…”

Hydrogen sulfide, potassium phosphite and zinc sulfate as alleviators of drought stress in sunflower plants

“…The ZS application increases enzyme antioxidant defenses and prevents oxidative stress in plants (Ma et al, 2017). ZS also contributes to higher levels of total chlorophyll, abscisic acid and proline, and well as improves the efficiency of stomatal control (Monjezi;Vazin;Hassanzadehdelouei, 2013;Zafar et al, 2014). Potassium phosphite (KPhi) was initially proposed as a protective fungicide, but studies described its potential as a plant biostimulant, and it induced tolerance to abiotic stresses (Gómez-Merino;Trejo-Téllez, 2015).…”