Mohammad Yazdandoost Hamedani; Mokhtar Ghobadi; Mohammad Eghbal ghobadi; Saeid Jalali Honarmand; mohsen saeidi
Abstract
In order to evaluate the effect of foliar application of some chemicals on antioxidant enzymes activity and chlorophyll fluorescence of sunflower in different irrigation conditions as well as identifying compounds’ effectiveness in reducing the adverse effects of drought stress, this experiment ...
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In order to evaluate the effect of foliar application of some chemicals on antioxidant enzymes activity and chlorophyll fluorescence of sunflower in different irrigation conditions as well as identifying compounds’ effectiveness in reducing the adverse effects of drought stress, this experiment has been conducted at the Agricultural Research Center of Hamedan, Iran, between 2015 and 2016. Three irrigation and six foliar application treatments are evaluated in a split plot experiment based on randomized complete block design with three replications. Irrigation treatments consist of 60%, 80%, and 100% plant water requirement and foliar application treatments include abscisic acid 40 μM, Selenium 20 mg/L, Salicylic acid 500 μM, SNP 100 μM, Glycine betaine 100 mM, and the control. Results show that by decreasing the irrigation water, the activity of superoxide dismutase, peroxidase, and catalase enzymes rise sharply, while the maximum photochemical efficiency of photosystem II and grain yield decline. The interaction effect of irrigation × foliar application on the activity of antioxidant enzymes and grain yield is significant, but not so on chlorophyll fluorescence. In deficit irrigation treatments, foliar application of all chemical compounds significantly boost the activity of antioxidant enzymes, compared to the control. Application of salicylic acid raises the maximum photochemical efficiency of photosystem II and grain yield, at all irrigation conditions. Under 60%, 80%, and 100% irrigation conditions, salicylic acid application increases grain yield by 24.3%, 10.1%, and 4.9%, respectively.
faride noroozi shahri; Saeid Jalali Honarmand; mohsen saeidi; farzad mondani
Abstract
Farmers have traditionally used fire and smoke in various parts of agriculture. Several studies have reported that smoke bioactive components acts as a new family of plant growth regulators. In order to evaluate and explore the potential of smoke-water as a phytohormone on growth characteristics and ...
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Farmers have traditionally used fire and smoke in various parts of agriculture. Several studies have reported that smoke bioactive components acts as a new family of plant growth regulators. In order to evaluate and explore the potential of smoke-water as a phytohormone on growth characteristics and biological yield of medicinal plants of basil and lemon balm an experiment was conducted as a split plot based on complete randomized block design with three replications. This experiment was conducted in research greenhouse of Razi University in 2017. In this study, eight factors were including four concentrations smoke-water (included 1:5000, 1:1000, 1:500 and 1:100 (v/v)) accompanying with cytokinin, auxin and gibberellic acid (each of them with concentration 50 µM) and control were assigned to the main plots and two harvest stages were assigned to the sub plots. Results indicated that the gibberellic acid significantly increased basil canopy height in comparison to others treatments. While the maximum canopy height in lemon balm was obtained from smoke-water at concentrations of 1:500 (v/v). Foliar-application with cytokinin resulted in the highest leaf area index in both plants compared to control. Eventually the highest biomass yield in basil and lemon balm was obtained from smoke-water at concentrations of 1:100 (v/v) that has increased by 52 and 39 percent, respectively, compared with control. In the current study applying high level of smoke-water foliar (1:100 and 1:500 (v/v)) induced on growth characteristics and biological yield, similar to phytohormone treatments especially cytokinin.
Babak Gholami; Faride Noroozi shahri; Farzad Mondani; Saeid Jalali honarmand; Mohsen Saeidi
Abstract
In order to evaluating effect of smoke-water and urea fertilizer on some growth indices, grain yield and yield components of wheat, a field experiment was conducted as a split plot based on Randomized Complete Block Design with three replications. The experiment was conducted during the season of 2015-2016 ...
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In order to evaluating effect of smoke-water and urea fertilizer on some growth indices, grain yield and yield components of wheat, a field experiment was conducted as a split plot based on Randomized Complete Block Design with three replications. The experiment was conducted during the season of 2015-2016 at Razi University Research Station, Iran. The experimental treatments were different levels of urea fertilizer application (included 90, 180, 300 and 360 kg ha-1) as main plot and leaf foliar application with different concentrations of smoke-water (included 0, 0.001%, 0.01%, 0.1% and 1% v/v) as sub plot. The results showed that smoke-water significantly improved all evaluated traits and increased wheat grain yield compared to control treatment in all urea fertilizer levels. The highest grain yield (922 g m-2) was obtained in application of 350 kg ha-1 urea and smoke-water at concentration of 1% v/v and the lowest grain yield (339 g m-2) was related to application 90 kg ha-1 urea and foliar with distilled water. The grain yield improved 15.22%, 11.36%, 7.18% and 7.67% by application of 90, 180, 300 and 360 urea kg ha-1 respectively, in smoke-water 1% concentration compared to the control treatment. It seems that smoke-water via improve increasing nitrogen efficiency could increase growth indices and grain yield of wheat.