ali ashori; Manoochehr Gholipoor; Ahmad Gholami; Hamid Abbasdokht
Abstract
Objective: The effect of magnetic and superabsorbent water was investigated on some morphophysiological traits and performance of cumin under a low irrigation regime.Methods: An experiment was conducted in the agricultural year of 1399-1400 in the research fields of the Faculty of Agriculture of Shahrood ...
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Objective: The effect of magnetic and superabsorbent water was investigated on some morphophysiological traits and performance of cumin under a low irrigation regime.Methods: An experiment was conducted in the agricultural year of 1399-1400 in the research fields of the Faculty of Agriculture of Shahrood University of Technology in two districts of Rahnjan and Garman of Shahrood city in a factorial format in the form of a randomized complete block design with three repetitions. Irrigation water type treatment at two levels (normal and magnetic) and locations (Rahanjan, Garman) with different climatic conditions and altitude above sea level as the main factor and superabsorbent treatment at three levels (zero, 100 and 200 kg/ha) as a secondary factor. Was considered. In all treatments, irrigation was applied based on 100% of plant water needs.Results: The results showed location, type of irrigation and different concentrations of superabsorbent had a positive and significant effect on the growth characteristics. In the Rahnjan region, due to the climatic conditions and higher average annual temperature and the treatment of 100 and 200 kg/ha of superabsorbent and the use of magnetic water, the highest amount of plant height, percentage and yield of essential oil and protein, soluble carbohydrates were observed.Conclusion: According to the results, most of the traits in the Rahnjan region had higher values than in the German region, and plant cultivation in the Rahnjan region is economical.
safiye arab; Mehdi Baradaran Firouzabadi; Ahmad Gholami; mostafa haydari
Abstract
In order to investigate the effect of ellagic acid on the growth indices and leaf aging process in soybean, an experiment was conducted during the two years of 2018 and 2019 in the research farm of Shahrood University of Technology's Faculty of Agriculture. The experiment was carried out factorial in ...
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In order to investigate the effect of ellagic acid on the growth indices and leaf aging process in soybean, an experiment was conducted during the two years of 2018 and 2019 in the research farm of Shahrood University of Technology's Faculty of Agriculture. The experiment was carried out factorial in the form of a randomized complete block design in three replications. The experimental treatments include the initial seed quality at two levels (normal seeds and aged seeds) and the application of ellagic acid at four levels (control, priming, foliar spraying and combined application of priming and foliar spraying with a concentration of 50 mg/L). The results showed that accelerated aging decreased the amount of chlorophyll, carotenoid, plant height, leaf and stem dry weight, oil percentage and seed yield compared to the control. The use of ellagic acid in the form of priming, foliar spraying and their combination in this study increased the percentage of oil by 0.23, 0.24 and 0.29%, respectively, compared to the control. Priming, foliar spraying and the combined application of priming and foliar spraying with ellagic acid improved the grain yield by 23.59, 23.23 and 55.48%, respectively. The use of ellagic acid as seed priming and foliar spraying better than other levels. Finally, it is recommended to use this material as a priming to increase the percentage of oil and yield of soybean.
sahar keramati; Ahmad Gholami; Mehdi Baradaran; Hamid Abbasdokht
Abstract
In order to investigate the role of foliar application of yeast extract on physiological and Biochemical properties of cowpea (Vigna sinensis L.) under drought stress conditions, a factorial experiment has been conducted as a randomized complete block design with three replications in Agriculture Campus ...
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In order to investigate the role of foliar application of yeast extract on physiological and Biochemical properties of cowpea (Vigna sinensis L.) under drought stress conditions, a factorial experiment has been conducted as a randomized complete block design with three replications in Agriculture Campus of Shahrood University of Technology (located in Bastam) during 2017 under drought stress and foliar application of yeast extract. Drought stress involves two stages of 50 present flowering and 50 present pod formation with control treatment (without irrigation interruption). Foliar application of yeast extract (two, four, six g/L, and control) are repeated twice with a seven-day interval, with the first one being 30 days after planting. Results show that drought stress has decreased relative water content of leaves. In contrast, relative water content (5.82%), proline content (30.74%), leaf flavonoid (83%), nitrogen (3.82%), phosphorus (22.22%), and potassium (43%) are among the traits that have increased with the use of yeast extract, compared to the control. Six g / L of the yeast extract has increased grain yield (1.02 t ha-1), leaf anthocyanin (0.072 mg /g fresh weight), and proline (31.62 mg /g fresh weight). It can be said that a concentration of six g/L of yeast extract can be useful to reduce the severity of drought stress. The yeast extract can act as an ecological strategy to improve the defensive response against environmental stresses.
Zohre Ansar; Mehdi Baradaran Firouzabadi; Serolah Galeshi; Ahmad Gholami; Mahdieh Parsaian
Abstract
This research was carried out to investigate the effect of spraying of Origanum vulgare and Zatria mutifora essence on quantitative and qualitative characteristics of sesame (Naz cultivar) under drought stress conditions. This experiment was conducted as split plot factorial in two years as a randomized ...
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This research was carried out to investigate the effect of spraying of Origanum vulgare and Zatria mutifora essence on quantitative and qualitative characteristics of sesame (Naz cultivar) under drought stress conditions. This experiment was conducted as split plot factorial in two years as a randomized complete block design with three replications. Treatments included two different irrigation regimes (every 15 days) and drought stress (every 25 days), three levels of Origanum vulgare include 0, 40 and 60% and 3 levels of Zatria mutifora include 0, 10 and 20%. Results indicated that drought stress significantly reduced the measured indices compared to control conditions. The results also showed that water stress reduced oil content and increased protein content and activity of catalase, ascorbate peroxidase and superoxide dismutase enzymes. It was found that the most measured indices in both control and stress conditions were associated with 60% Origanum vulgare 20% Zatria mutifora essence. The use of Origanum vulgare and Zatria mutifora essence, under suitable irrigation conditions, increased the seed yield of 27.5% compared to control, whereas it increased 58% under stress conditions. Therefore, it can be stated that under dry conditions, the use of Origanum vulgare Zatria mutifora essence can induce tolerance in the plant in response to drought conditions. Since less cost is needed compared to other methods, therefore, in areas with low water conditions, it is recommended to use the Origanum vulgare and Zatria mutifora essence.
Shahram Taheri; Ahmad Gholami; Hamid Abbasdokht; Hassan Makarian
Abstract
In order to evaluate the effects of seed priming to reduce water deficit stress in safflower cultivars, an experiment was conducted as a split plot factorial based on randomized complete block design with three replications at Shahrood Agricultural Research Center in 2015. The main plot consisted of ...
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In order to evaluate the effects of seed priming to reduce water deficit stress in safflower cultivars, an experiment was conducted as a split plot factorial based on randomized complete block design with three replications at Shahrood Agricultural Research Center in 2015. The main plot consisted of irrigation at three levels based on the evaporation from class A evaporation pan: non water deficit stress (60 mm evaporation), mild water deficit stress (120 mm evaporation) and severe water deficit stress (180 mm evaporation) and subplots consisted of two factors include safflower cultivars (Goldasht, Sina and Soffeh) and seed priming (Primed seeds with salicylic acid and non-primed). The results showed that severe water stress reduced the grain yield by about 29 percent compared to non stress conditions. In these conditions activity of superoxide dismutase, peroxidase, ascorbate peroxidase and catalase enzymes was increased by about 33, 25, 29 and 40 percent respectively. In severe water deficit conditions, content of malondialdehyde, proline and carotenoid significantly increased but the amount of chlorophyll was reduced. Priming of seeds with salicylic acid caused the antioxidant defense system activity to be increased by about 7-9 percent, therefore increased resistance of safflower plants to water stress and resulted in greater seed yield under water stress conditions. Interaction of irrigation and cultivar appeared to be significant on seed yield and activity of catalase, peroxidase and ascorbate peroxidase enzymes.