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Open Access Article
1 - The Effect of Drought Stress on Agrophysiological Traits of Corn (Zea mays L.) Cultivars in Khoy Condition
MirHamid Aboutalebi Abdollah Hasanzadeh Ghorttapeh Amir Fayaz MoghadamOver use of water and unnecessary limitation irrigation water, both affects economic production of corn. Therefore, it is necessary to use different irrigation regimes in order to determine the most suitable irrigation interval with minimum effect on yield. To study the MoreOver use of water and unnecessary limitation irrigation water, both affects economic production of corn. Therefore, it is necessary to use different irrigation regimes in order to determine the most suitable irrigation interval with minimum effect on yield. To study the effect of different irrigation regimes on forage and grain yield of three varieties of maize, an experiment was carried out at the Research Center of Khoy, a province of west Azarbaijan, in 2008. The experiment was carried out with four replications in an form of split plot based on randomized complete block design. The main plot consisted of four levels of irrigation intervals (I1, I2, I3 and I4) of corn plots, irrigated after 60, 90, 120 and 150 (mm) evapotranspiration pan. Subplots consisted of three varieties of corn (SC704, Maxima524, Jeta600). In this experiment, different features of maize varieties were analyzed and measured at milk stage (R3) as forage. Results showed that by increasing irrigation cycle and as a result decreasing water using in four levels of irrigation, traits like forage yield, ear weight, plant height, stem and leaf weight, ear leaf area and relative water content have decrease in treatment according to decrease in water used. Among three the varieties under study, Maxima524 due to lower growing period as compared to the other two varieties, used low water volumes while yielded equal to the other two varieties. Overall, results showed that Maxima524 based on irrigation after 90 mm evaporation is found to be low water user against optimal performance. Manuscript profile -
Open Access Article
2 - The Effect of external abscisic acid on some physiological factors and gas exchanges of Lavender (Lavandula angustifolia cv. Organic Munestead) in response to drought stress
Hossein Gorgini Shabankareh sarah khorasaninejad vahid shariati hasan soltanlooIn order to study the effects of irrigation and abscisic acid regime on physiological factors and gas exchanges of Lavandula angustifolia CV. Organic Munestead, a pot experiment was conducted as factorial based on randomized complete block design with three replications MoreIn order to study the effects of irrigation and abscisic acid regime on physiological factors and gas exchanges of Lavandula angustifolia CV. Organic Munestead, a pot experiment was conducted as factorial based on randomized complete block design with three replications at Plant Production faculty of Gorgan University of Agricultural Sciences and Natural Resources, during growing season of 2016- 17. The treatments were four levels of irrigation regimes (30-40, 50-60, 70-80 and 90-100 percent field capacity) and Abscisic acid including three levels (0, 15 and 30 Mm/L). The results showed that irrigation regimes increase chlorophyll a, chlorophyll b, chlorophyll a+b, gas exchange and RWC. Abscisic acid had significant effect on all traits except of carotenoid content that except to efficiency of water consumption was Abscisic acid 15 Mm/L, the others were the highest in Abscisic acid 30 Mm/L. Also interaction effect of irrigation regimes and Abscisic acid was significant for all traits except of chlorophyll a+b. Abscisic acid 15 Mm/L spray and irrigation regimes 30-40 percent field capacity increase 25.04 and 38,75 in efficiency of leaf water consumption and efficiency of water consumption, respectively. Generally, Abscisic acid 15 Mm/L application and irrigation regimes 30-40 percent field capacity Introduces the best treatment, due to the lower consumption of water and the use of Abscisic acid in stress conditions, higher levels of Abscisic acid can be achieved in inducing drought tolerance. Manuscript profile -
Open Access Article
3 - Changes in proline amount, water relations and morphological compatibility of two soybean varieties (Pershing and DPX) under water stress
حسن modarse zade mr rezaee مه لقا GhorbanliWater stress is the main limitation in the production of many crops and causes many physiological and morphological reactions in plants. This problem has been observed in different cultivars of the same species, including soybeans. The aim of this research was to study MoreWater stress is the main limitation in the production of many crops and causes many physiological and morphological reactions in plants. This problem has been observed in different cultivars of the same species, including soybeans. The aim of this research was to study the effect of water stress on water relations, proline content and morphological characteristics of two soybean cultivars including Pershing and DPX. For this purpose, an experiment was carried out in pots and water treatments of 80 (flooded), 60, 40 and 20% (dry) of the water saturation capacity of the soil were applied on them. The results of the studies showed a significant difference in the measured measurements in two soybean cultivars. In both cultivars, reducing the amount of irrigation caused a decrease in plant height and root length, and in the flooding treatment, it was associated with a significant increase in misplaced roots. In the Pershing variety, the decrease in the amount of irrigation led to a decrease in the relative amount of water (RWC), but in the DPX variety, the lowest amount of RWC was observed in the 40% treatment. Leaf water loss (LWL) was higher in all treatments in Pershing variety than similar treatments in DPX variety. The highest amount of proline in leaves and roots was related to treatments with lower RWC, which was observed in Pershing and DPX cultivars in 20% and 40% treatments, respectively. In both cultivars, the amount of proline amino acid was higher in the leaves than in the root. The results showed that in both cultivars, leaves were more affected by water stress than roots, and Pershing cultivar showed more sensitivity in low water levels. Manuscript profile -
Open Access Article
4 - Physiological responses of two tomato (Lycopersicun esculentum M.) cultivars to Azomite fertilizer under drought stress.
Hamid Noorani Azad Abolghasem Hassan Poor Gholam Reza Bakhshikhaniki Mohammad Ali Ebrahimi -
Open Access Article
5 - شایستگی های کارآفرینانه ی مدیران در تعاونیهای زنان روستایی همدان
رضا موحدی سارا جلیلیانپژوهش حاضر با هدف تحیل شایستگیهای کارآفرینانهی مدیران تعاونیهای زنان استان همدان انجام شده است. روش انجام تحقیق به صورت پیمایشی و با استفاده از ابزار پرسشنامه انجام پذیرفت. گردآوری داده­ها با تکمیل پرسشنامه­ها توسط 105 نفر از مدیران تعاونی­ها به عنو Moreپژوهش حاضر با هدف تحیل شایستگیهای کارآفرینانهی مدیران تعاونیهای زنان استان همدان انجام شده است. روش انجام تحقیق به صورت پیمایشی و با استفاده از ابزار پرسشنامه انجام پذیرفت. گردآوری داده­ها با تکمیل پرسشنامه­ها توسط 105 نفر از مدیران تعاونی­ها به عنوان نمونه­های تحقیق صورت گرفت. روایی پرسشنامه بر اساس نظر کارشناسان و متخصصان امر بررسی و تایید گردید و پایایی نیز با استفاده از ضریب آلفای کرونباخ 94/0= α محاسبه و مورد تأیید قرار گرفت. شایستگی­های کارآفرینانه مدیران تعاونی­های مورد مطالعه در هشت عامل قرار گرفتند. این عوامل عبارت بودند از "داشتن اهداف راهبردی"، "توانایی نظارت و سازماندهی افراد"، "ریسکپذیری"، "توانایی ایجاد انگیزه و اعتماد در افراد"، "برخورداری از نگرش مثبت و انتقادپذیر"، "توانایی شناسایی و درک نیاز مشتریان"، "مهارت در روابط عمومی و کسب و بکارگیری مهارت و انرژی". به منظور بررسی برازش مدل اندازه­گیری مربوط به سازه شایستگی­های کارآفرینانه مدیران تعاونی­های مورد مطالعه، از مدل معادلات­ساختاری با نرمافزار LISREL8.8 استفاده شد. نتایج مدل نشان دهنده برازش مناسب برای هشت سازه ذکر شده در بالا بود. همچنین سه نوع شاخص برازش مدل شامل شاخص نیکویی برازش (85/0PNFI= و90/0CFI=)، شاخص تطبیقی (99/0NNFI= ، 94/0 NFI=) و شاخصهای برازش مقتصد (027/0 = RMSEA و 078/1 = ) برازش عالی و مناسب مدل اندازه­گیری شایستگیهای کارآفرینانهی مدیران تعاونیهای زنان را با داده­های مشاهده شده تأیید نمودند. Manuscript profile -
Open Access Article
6 - Changes in Some Physiological and Biochemical Characteristics of the Selected of Almond Cultivars (Prunus dulcis Mill.) Grafted on Different Rootstocks Under Drought Stress
Abdolbaset Ranjbar Ali Imani saeed piri Vahid AbdoosiIn order to evaluate the response of selected cultivars of almond, grafted on different rootstocks under drought stress due to increased irrigation intervals in the 2015-2016 year, in the Temperate Fruit Research Center, Horticultural Research Institute in Karaj, a fact MoreIn order to evaluate the response of selected cultivars of almond, grafted on different rootstocks under drought stress due to increased irrigation intervals in the 2015-2016 year, in the Temperate Fruit Research Center, Horticultural Research Institute in Karaj, a factorial based on a randomized complete design with three replications was carried out. Factors comprised cultivars in five levels (Supernova, Texas, Marcona, Shokoufeh and K13-40), rootstocks in Three levels [peaches × almonds hybrids (GF-677 and GN-22), and bitter almond seedlings NO. 32], and drought stress in four levels (irrigation intervals were 3(Control), 5, 10 and 15 Days). The results showed that the interaction of three factors for chlorophyll fluorescence parameters include maximum (Fm), variable (Fv) and variable to maximum (Fv/Fm), electrolyte leakage and releate water content(RWC) of leaves at 1% probability level, and interaction effects of rootstock × cultivar for chlorophyll b and a/b as well as cultivar × drought stress for a/b were significant at 5% probability level. Also, interaction effects of rootstock × drought stress were significant for all evaluated traits except a/b at 1% probability level. Drought stress reduced Fv by increasing Fo and decreasing Fm, and reduced Fv/Fm in sensitive cultivars on seedling and GN-22 rootstocks from 0.82 to 0.67. As a general result, all of the cultivars on the GF-677 rootstock showed greater resistance to drought stress. Supernova and Shokofeh cultivars grafted on GF-677 rootstock were most resistant rootstock - scion compounds, but other rootstock-scions compounds, were sensitive to drought stress. Manuscript profile -
Open Access Article
7 - The effect of salicylic acid and ascorbic acid foliar application on forage yield, RWC and leaf chlorophyll of corn under drought stress
navvab haji hassani asl farhad farah vash mohsen roshdi Bahram mir shekari mehdi gaffariTo study the effect of salicylic acid and ascorbic acid foliar application on yield and specification of corn under drought stress, an experiment was performed in Khoy in 2013-14 as split plot with basis of randomized complete block design in four replications. Main fac MoreTo study the effect of salicylic acid and ascorbic acid foliar application on yield and specification of corn under drought stress, an experiment was performed in Khoy in 2013-14 as split plot with basis of randomized complete block design in four replications. Main factor: drought stress doing through irrigation after 75±5 and 150±5 mm evaporation on Pan. Sub factor was including of foliar application of ascorbic acid and salicylic acid in 100, 200 and 300 mg/lit and control treatment (non- foliar application). Effect of year was significant only on RWC. Drought stress had significantly effect on fresh forage yield, chlorophyll a, b and chlorophyll a+b. Foliar application had significantly effect on all characters. Interactions effect of year and foliar application were significant on fresh forage yield and chlorophyll a. 100 mg/lit salicylic acid foliar application in 2013 year treatment with average of 74.46 ton/ha and non- foliar application in 2014 year treatment with average of 59.47 ton/ha had maximum and minimum of fresh forage yield. Maximum and minimum of chlorophyll a seen in 300 mg/lit ascorbic acid foliar application in 2014 year and non-foliar application in 2013 year. Interaction of drought stress and foliar application had significantly effect on fresh forage yield, only. 100 mg/lit salicylic acid foliar application in normal irrigation treatment (80.82 ton/ha) and non- foliar application in drought irrigaton treatment (52.74 ton/ha) had maximum and minimum of fresh forage yield, respectivly. Manuscript profile -
Open Access Article
8 - The effects of alkaline irrigation on nitrogen, alkalinity, bicarbonate, soluble sugars and relative water content in the plant Nitraria schoberi
J. Moemeni F. PanahiIn this study the effect of alkalinity stress on physiological characteristics of plant Nitraria schoberi in 1391 under the terms of the greenhouse at the University of Kashan, were studied. Project consisting of 5 treatments (each treatment consisted of 4 replicates) a MoreIn this study the effect of alkalinity stress on physiological characteristics of plant Nitraria schoberi in 1391 under the terms of the greenhouse at the University of Kashan, were studied. Project consisting of 5 treatments (each treatment consisted of 4 replicates) and control, stress levels Four: The first level of control (pH = 7/2), Low alkalinity (pH = 8/5), Moderate alkalinity (pH = 9), High alkalinity (pH = 9/5) and extreme alkalinity (pH = 10) was conducted. Parameters of soluble sugars, Relative water content, Nitrogen and bicarbonate in different treatments Alkalinity (leaves, stems and roots) were examined. In order to analyze the data using Minitab software version 16 was used. Analysis of variance was performed using analysis of one way ANOVA. Compare averages with Tukey test at significance level was 5%. The mean comparison can be received by increasing the alkalinity of 8/5 treatments, Amount parameters of soluble sugars (leaves, stems and roots), Nitrogen (leaves, stems and roots), bicarbonate (leaves) and relative water content (leaves and stems) Increase and in third and fourth treatments reduced, While the bicarbonate (stems and roots), relative water content (root), fresh weight of the plant (stem) With increasing alkalinity Has increased first treatment and the trend of decline. In general it can be stated that the plant Nitraria schoberi in soils with alkalinity 9, and grows well in arid and semiarid areas of the plant can be be used to resuscitation vegetation cover. Manuscript profile -
Open Access Article
9 - Study response of maize (Zea mays L.) hybrids to drought stress using physiological and stress tolerance indices
mohammad moradi Seyed Sajad Hosseini FalehiDrought is the most important environmental stress in agriculture and improving yield maize under drought is a major goal of plant breeding. In order to evalutiaon 15 hybrids under normal and water stress regimes (irrigated after 90±5 and 135±5 mm evaporat MoreDrought is the most important environmental stress in agriculture and improving yield maize under drought is a major goal of plant breeding. In order to evalutiaon 15 hybrids under normal and water stress regimes (irrigated after 90±5 and 135±5 mm evaporation from class A pan for normal and water stress conditions, respectively), a study was conducted at Dezful in Khuzestan Province, during 2014 growing seasons, using RCBD with three replications. The results of the variance analysis showed that differences among the genotypes, in terms of all indices and yield in normal and drought stress conditions were significant. Highly significant correlations were found between the grain yield and some physiological traits in drought stress condition, such as RWC and root weight, So these traits can be reliable criteria for the selection of tolerant genotypes with prospect to higher yields. Results of correlation between defferente drought tolerance indices with grain yield in both conditions (normal and water stress) showed that MP, GMP and STI were a successful index to select high yield and tolerante genotypes. Based on this indices and the results of the biplot diagram and cluster analysis the crosses SD/17×SD/15, SD/3×SD/17, CML×SD/3 and CML×SD/17 had the best drought tolerance and the crosses SD/10×SD/704, SD/15×SD/704 and SD/17×SD/10 were high sensitivity to drought and can be identified as the most sensitive hybrids to drought. Manuscript profile -
Open Access Article
10 - Evaluation of the Tolerance of Four Pistachio Rootstocks to Salinity Stress Based on Morphological, Physiological and Biochemical Parameters
Samanah Hakimnejad Hamid reza Karimi Seyyed Rasoul Sahhafi Majid Esmaeilizadeh(new) -
Open Access Article
11 - Response of Almond Genotypes/Cultivars Grafted on GN15 ‘Garnem’ Rootstock in Deficit-Irrigation Stress Conditions
Hossein Fathi Ali Imani Mohammad Esmaeel Amiri Jafar Hajilou Jaefar Nikbakht -
Open Access Article
12 - Analyzing the effects of defoliation on physiological and biochemical characteristics of sunflower under cut irrigation.
Farshad Ghooshchi Sensitivity to water deficit a few days before the heads emergence up to complete color change of grains is too much in sunflower. But the most sensitive stage to water deficit is at anthesis level. As a result, decrease in leaf area is the first reaction that a More Sensitivity to water deficit a few days before the heads emergence up to complete color change of grains is too much in sunflower. But the most sensitive stage to water deficit is at anthesis level. As a result, decrease in leaf area is the first reaction that a plant choose to adapt the storage of received water; this way is the most important mechanism of plant adaption to water deficit stress. In order to analyze the effects of defoliation on qualitative and quantitative characteristics of randomized complete blocks. The main plot was designed at four levels including the normal irrigation (S1), no irrigation from floret to flowering (S2), no irrigation from flowering to first stage o grain filling (S3), and no irrigation from first stages of grain filling to physiological maturity (S4). And the sub plot was designed at three level of on defoliation (F1), 25% defoliation (F2), and 50% defoliation. The results indicated that the main effect of no irrigation was significant an all factors under study including grain yield , biological yield , oil content, cytoplasm membrane resistance , Relative water content (RWC) , total chlorophyll, and proline. The main effect of defoliation was significant on all factors except for grain yield and biological yield. But, the interaction effect of no irrigation stress and defoliation was not significant on the factors under study. No irrigation at flowering to grain filling could decrease the grain yield to 44% comparing the normal irrigation. Also, under the same condition, the amount of proline increased significantly and reached 56.8 m mol / g; that is 49% more than normal irrigation condition. Moreover, 50% defoliation could increase the total chlorophyll and RWC significantly. Manuscript profile -
Open Access Article
13 - Effect of foliar application of humic acid micronutrients and cytokinin on yield and some quality traits of Italian basil (Ocimum basilicum L.) under hydroponic cultivations
Roma Kalhor. monfared Mohamad Nabi.ilkayi Farzad Paknejad One of the most important applications of nanotechnology in agriculture is the use of Nanofertilizers to feed plants to improve plant nutrition and minimize the costs of environmentalprotection, and hydroponic cultivation, due to the lack of environmental pollutio More One of the most important applications of nanotechnology in agriculture is the use of Nanofertilizers to feed plants to improve plant nutrition and minimize the costs of environmentalprotection, and hydroponic cultivation, due to the lack of environmental pollution to the soil, isa suitable method. To produce agricultural products. For this purpose, a factorial study wasconducted in the form of a complete randomized design with three replications in a greenhouselocated in Nazarabad, Karaj, on Italian basil as hydroponic cultivation. The treatments of thisexperiment include foliar application of humic acid at three levels (no consumption control ascontrol, 500, 1000 mg.l-1), foliar application of micronutrients at three levels (0, iron Nanochelate and zinc Nano chelate) and solution Spray of cytokinin hormone was at two levels (0and 100 μM). The results showed that after increasing in humic acid concentration, the yieldand quality traits of Italian basil increased and foliar application of micronutrients (iron andzinc) as well as cytokinin hormone increased the traits studied compared to the control. Humicacid 1000 mg.l-1 × Nano-chelate on × cytokinin leads to an increase of 39.99% and also theinteraction of humic acid 1000 mg/l iron Nano-chelate × cytokinin gained to 115.34% increasein plant dry weight ratio Witnessed. Manuscript profile
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