Seyedeh nasrin Hosseini; Jalal Jalilian; esmaeil gholinezhad
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
In order to investigate the effect of water deficit stress and stress modifiers on some morphological and physiological characteristics and yield of Quinoa, a pots factorial experiment based on a completely randomized design with 16 treatments and 6 replicates was done in 2019 at Urmia University. The ...
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In order to investigate the effect of water deficit stress and stress modifiers on some morphological and physiological characteristics and yield of Quinoa, a pots factorial experiment based on a completely randomized design with 16 treatments and 6 replicates was done in 2019 at Urmia University. The first factor includes water deficit stress at four levels, stress at the vegetative growth stage, stress at the reproductive growth stage, stress at seed filling stage and no stress (control). The second factor was foliar spraying of ascorbic acid, salicylic acid, nano-micronutrient chelate fertilizer and Control (water spray). Water deficit stress at different growth stages decreased plant height, a number of laterals, dry weight and fresh weight of vegetative organs, root volume, fresh and dry weight of root and root length compared to control. However, electrolyte leakage and leaf temperature increased. The results showed that water deficit stress at post-anthesis stage decreased grain yield via decreasing 1000-grain weight. Foliar application of growth regulators by improving yield components, increased the yield of quinoa under water deficit stress condition. Therefore, according to the results, it seems that the use of stress modulators in quinoa under water deficit stress with stimulating growth and metabolism, cause to tolorate water deficit stress.
Faezeh Heidari; Jalal Jalilian; esmaeil gholinezhad
Volume 22, Issue 4 , Autumn 2020, , Pages 587-600
Abstract
This experiment was conducted to investigate the effect of foliar application different nano-fertilizers on modulating negativeeffectsof salt stress on quinoa, in factorial experiment based on completely randomized design with three replications in the research farm of Urmia University in the pot during ...
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This experiment was conducted to investigate the effect of foliar application different nano-fertilizers on modulating negativeeffectsof salt stress on quinoa, in factorial experiment based on completely randomized design with three replications in the research farm of Urmia University in the pot during 2018. The first factor was salinity of irrigation water using (Lake Urmia water at three levels: 0, 16 and 32 dS/m and the second factor was nano-fertilizers at five levels: calcium, silicon, zinc, potassium and control (no foliar application). The results showed that salinity stress caused negative effects on all traits affecting quinoa growth. The highest decrease in traits was observed in salinity stress of 32 dS/m. Salinity stress of 32 and 16 dS/m compared to control decreased plant height (20 and 17%), inflorescence number (48 and 36%), root volume (44 and 40%), main root length (41 and 23%), root dry weight (68 and 30%), relative leaf water content (26 and 13%), chlorophyll index (15 and 7%) and 1000-seed weight (31 and 23%), respectively; but increased ionic leakage by 14 and 6%, respectively. Foliar application with nano-fertilizer compared to control increased the yield, yield components and morphological traits. The highest seed yield was obtained under optimum conditions and severe salinity stress (32 dS/m) by foliar application with nano-fertilizer of zinc and silicon, respectively. Under severe salinity stress, foliar application with nano-fertilizer of silicon compared to non-foliar application increased the dry weight of inflorescences, total dry weight and seed yield by 35%, 16% and 43%, respectively, and moderated the effects of salinity stress. Foliar application with nano-fertilizer via enhancing chlorophyll index, relative leaf water content and improving root characteristics, led to increase yield and seed yield components of quinoa. Therefore, it seems that foliar application of nano-fertilizers is suitable to improve the yield of quinoa especially in salinity stress conditions.
Jalal Jalilian; Reza Amirnia; Esmaeil Gholinezhad; Sahar Abbas zadeh
Volume 18, Issue 3 , Autumn 2016, , Pages 625-637
Abstract
To evaluate effected of supplemental irrigation and seed priming on yield and some quantity and quality characteristics of vetch (Vicia dasycarpa) rainfed maragheh cultivar, an experiment was carried out at the Research Farm of Faculty Agriculture of Urmia University, West Azarbaijan province, Iran, ...
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To evaluate effected of supplemental irrigation and seed priming on yield and some quantity and quality characteristics of vetch (Vicia dasycarpa) rainfed maragheh cultivar, an experiment was carried out at the Research Farm of Faculty Agriculture of Urmia University, West Azarbaijan province, Iran, during 2011. The experimental design was split-plot, laid out in Randomized Complete Block with three replicates. The main plots were without supplemental irrigation (I1), one times supplemental irrigation (I2), two times supplemental irrigation (I3) and three times supplemental irrigation (I4). The subplot included four levels of seed priming: Control (C), Water (W), Phosphate (P) and Nitroxin (N). Plant height, Pod number in stems, 1000-grain weight, biological yield (6.83 t/ha) and harvest index were influenced by the supplemental irrigation. Plant height, 1000-grain weight in second and third harvest and harvest index were influenced by seed priming. Maximum and minimum 1000-grain weight was observed in N (40.66g and 14.72) and C (37.05g and 10.36) seed priming, respectively. As a result, applying two times supplemental irrigation and seed treatment with phosphate and nitroxin had positive effects on quality and quantity yield of vetch.