dalir fayazipour; Gholam Ali Akbari; Iraj Allah dadi; fatemeh amini; Marjan Alsadat Hoseinifard
Articles in Press, Accepted Manuscript, Available Online from 26 May 2021
Abstract
This study aimed to evaluate the effects of planting date and spraying CCC on some biochemical characteristics and qualitative and quantitative yield of sugar beet. Therefore, the experiment was conducted using a Split factorial based on randomized complete block design with three replications in 2015-2016 ...
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This study aimed to evaluate the effects of planting date and spraying CCC on some biochemical characteristics and qualitative and quantitative yield of sugar beet. Therefore, the experiment was conducted using a Split factorial based on randomized complete block design with three replications in 2015-2016 growth season in field experiment of university of Abourayhan, Tehran University. Treatment were planting date (2 October and 22 October) as the main factor and cultivars (Suprima and 9597) and foliar spraying (1000 ppm) / non-application of CCC as sub plots. The results showed that the highest percentage of bolting (54.58%) and sodium content (equivalent to 9.16 mEq / 100 g of sugar beet pulp) were observed in 2 October and the highest root yield (26.15 ton per hectare) and white sugar yield (equal to 1.44 tons per hectare) were obtained in 22 October. Also, it was observed that most values of studied traits (except bolting percentage and sodium content of sugar beet pulp), were occurred by the cultivation of Suprema with CCC spraying. overall, the conclusion that the treatments, the best conditions to determine the best root and sugar yield in the area of research, the date of 22 October, the Suprima and application of 1000 ppm and recommended in order to cultivate of sugar beet in the Pakdasht area.
Mahdieh Amirinejad; Gholamali Akbari; Amin Baghizadeh; Iraj allahdadi; Maryam Shahbazi; Masoomeh Naimi
Volume 17, Issue 4 , Winter 2016, , Pages 855-866
Abstract
To determine the effects of drought stress and foliar application of zinc and iron on some biochemical parameters of cumin (Cuminum cyminum L.), a greenhouse experiment was carried out at Graduate University of Advanced Technology of Kerman, Iran during 2011-2012. The experiment was conducted in factoriel ...
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To determine the effects of drought stress and foliar application of zinc and iron on some biochemical parameters of cumin (Cuminum cyminum L.), a greenhouse experiment was carried out at Graduate University of Advanced Technology of Kerman, Iran during 2011-2012. The experiment was conducted in factoriel design based on randomized completely block with three replications. Three levels of water deficit 70 (well- watered), 50 and 30 (moderate and severe stress) percent of field capacity with treatments of Zn, Fe, Zn+Fe (5/1000) and non-foliar application (water) were used. Results show positive effects of iron and zinc foliar application under drouth stress on some biochemical parameters of cumin. Maximum quantities of total protein and proline (4.12 and 364.52 mg/gr Fw) and maximum quantities of soluble sugar (5.62 mg/gr Dw) were observed in severe stress with Zn+Fe treatment. Also zinc and iron foliar application decresed malondealdohide (9.16 and 5.06 µM/gr Fw) in moderate and severe stress conditions in cumin leaf, respectively. Drought stress and foliar application increased enzymes activities. Maximum quantities of enzymes activities (catalase: 28.51, gayacol peroxidase: 284.75 and superoxid dismutase: 50.99 U/mg protein) in leaves were observed in severe stress with Zn+Fe treatment too. According to our results, iron and zinc foliar application improves biochemical parameters in cumin under drouth stress.
Masoumeh Naeemi; Gholam Ali Akbari; Amir Hosein Shirani Rad; Tahere Hasanloo; Gholam Abbas Akbari; Mahdieh Amirinejad
Volume 17, Issue 3 , Autumn 2015, , Pages 635-647
Abstract
In order to evaluate the effect of zeolite application and selenium spraying on some physiological traits and grain yield in medicinal pumpkin (Cucurbita pepo L.) under different moisture regimes, a study was conducted in a factorial experiment based on randomized complete block design with three replications ...
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In order to evaluate the effect of zeolite application and selenium spraying on some physiological traits and grain yield in medicinal pumpkin (Cucurbita pepo L.) under different moisture regimes, a study was conducted in a factorial experiment based on randomized complete block design with three replications during 2010 in Takestan at Gazvin province, Iran. The three levels of irrigation factors including normal irrigation based on 60mm evaporation from class A pan (control), withhold irrigation at the flowering and fruit formation stages, zeolite factors including two levels of non-application and use of 10 tons per hectare and selenium was sprayed at two concentration in zero and 30 grams per liter per hectare. The results showed that water deficit stress decreased stomatal conductivity, carotenoid content, chlorophyll a, total chlorophyll, grain yield and increased proline concentration and chlorophyll b content. Zeolite application of 10 tons per hectare under water deficit stress conditions had desirable effect on chlorophyll a and chlorophyll b content and grain yield, also improved traits as stomatal conductivity and reduced proline concentration. The highest grain yield (1329 kg.ha-1) was obtained with zeolite and selenium application together at normal irrigation conditions. According to the results, it seems that application of zeoilite and selenium in areas that are subjected to water deficit stress can be useful in improving plant growth and production.
Sanaz Afshari-Behbahanizadeh; Gholam Ali Akbari; Maryam Shahbazi; Iraj Alahdadi
Volume 17, Issue 2 , Spring 2015, , Pages 487-502
Abstract
In order to evaluate the effect of terminal water deficit stress on leaf traits and their relations to grain yield in different barley genotypes (‘Yousof’, ‘Fajr30’, ‘Nosrat’, ‘PBYT-46’, ‘PBYT-97’ and ‘Morocco’), two separated experiments ...
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In order to evaluate the effect of terminal water deficit stress on leaf traits and their relations to grain yield in different barley genotypes (‘Yousof’, ‘Fajr30’, ‘Nosrat’, ‘PBYT-46’, ‘PBYT-97’ and ‘Morocco’), two separated experiments were conducted in stress (water withholding from anthesis towards the end of growing season), and non stress (normal irrigation) conditions based on RCBD with three replications in 2010-2011 at Yazd Agricultural Research Station. The results indicated that drought stress significantly reduced leaf area index, greeness and increased canopy temperature and leaf rolling. Also, drought stress significantly increased epicuticular wax content at 21 days after anthesis. Studying by Scanning Electron Microscope (SEM) confirmed the increased dispersal of leaf wax crystals in leaf surface in ‘Yousof’ and ‘PBYT-46’ genotypes. ‘Fajr30’ genotype with the highest amount of cuticular transpiration and canopy temperature had the highest reduction in grain yield and ‘Yousof’ and ‘PBYT-46’ genotypes with higher amount of wax crystals dispersal, lower amount of cuticular transpiration, canopy temperature and greeness reduction in stress condition, had the least reduction percentage in grain yield. According to the non significant correlation between leaf wax and grain yield in both conditions (stress and normal) and in stress condition, it seems that increased epicuticular wax crystals had a more effective role than the quantity of wax in drought tolerance of barley genotypes.
Avishan Taherkhanchi; Gholam Ali Akbari; Seyed Ali Mohammad Modarres-Sanavy; Majid Ghorbani Javid
Volume 15, Issue 3 , Autumn 2014, , Pages 141-153
Abstract
To evaluate the effect of bio-fertilizers on physiological traits in soybean under water deficit condition, agreenhouse experiment was conducted in 2011, at faculty of Agriculture, Tarbiat Modares University,using a factorial design based on RCBD with three replications. The experimental treatments weredifferent ...
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To evaluate the effect of bio-fertilizers on physiological traits in soybean under water deficit condition, agreenhouse experiment was conducted in 2011, at faculty of Agriculture, Tarbiat Modares University,using a factorial design based on RCBD with three replications. The experimental treatments weredifferent irrigation regimes including non-stress (40% water depletion), moderate stress (60% waterdepletion) and severe stress (80% water depletion) and four methods for application of mixed ofAzotobacter and Azosperilium on plant or seed. Results showed that the highest yield and yieldcomponents were observed in non-stress and spraying of bacteria on leaf + seed inoculation conditions.The highest catalase enzyme activity was observed in moderate stress and seed inoculation + spraying ofbacteria on leaf condition. In addition, the highest proline content was showed in severe stress and nonbacterialinoculation and was three times more than the minimum treatment. The results generallyindicated that using bio-fertilizer in moderate stress can reduce the destructive effects of stress anddecrease of yield, but severe stress led to increase of cost of production and could not effect on increasingof yield significantly.
Davood Afiuni; Amir Houshang Jalali; Reza Khakpour; Leili Safaei; Tohid Najafi-Mirak; Gholamali Akbari
Volume 16, Issue 1 , Spring 2014, , Pages 55-68
Abstract
In order to assess the impact of different sowing dates on yield and yield components of wheat genotypeswith different growth habits, a two years study (2007-2009) using a split plot in randomized completeblock design with three replications was conducted in Kabootarabad Agricultural Research Station ...
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In order to assess the impact of different sowing dates on yield and yield components of wheat genotypeswith different growth habits, a two years study (2007-2009) using a split plot in randomized completeblock design with three replications was conducted in Kabootarabad Agricultural Research Station ofIsfahan. Three sowing dates of 12 Oct., 1 Nov., and 21 Nov. were main plots and 15 genotypes of wheatwere subplots. The average grain yield in three planting dates was 8495, 9156 and 6749 kg ha-1,respectively. At all planting dates, the maximum and minimum grain yield belonged to spring and wintertypes and the grain yield of winter, facultative and spring groups were 7519, 8267 and 8614 kg ha-1,respectively. At 1 Nov. five spring genotypes M-81-13, Bahar, Pishtaz, Kavir and Marvdasht andfacultative cultivar Alvand produced the highest grain yield by an average of 10433, 10146, 10040, 9843,9822 and 9813 kg/ha and therefore can be recommended for planting in temperate regions of theprovince. Spikes per m2 and grain weight were the most important yield components that were reduced inresponse to late planting. Based on the results, 1 Nov. can be recommended as the best planting date forthe region.
Masoomeh Naeemi; Gholam Ali Akbari; Amir Hossein Shirani Rad; Tahereh Hassanlou; Gholam Abbas Akbari
Volume 14, Issue 1 , Summer 2012, , Pages 67-81
Abstract
In order to evaluation the effect of zeolite application and selenium spraying on water relations traits and antioxidant enzymes in medicinal pumpkin (Cucurbita pepo L.) at water deficit stress conditions, an experiment was conducted in factorial based on randomized complete block design with three replications ...
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In order to evaluation the effect of zeolite application and selenium spraying on water relations traits and antioxidant enzymes in medicinal pumpkin (Cucurbita pepo L.) at water deficit stress conditions, an experiment was conducted in factorial based on randomized complete block design with three replications during 2010 in Takestan, Iran. The three levels of irrigation factor include normal irrigation (control), withhold irrigation at the flowering and fruit formation stages, zeolite factors include two levels of non application and use of 10 tons per hectare and selenium was sprayed at two concentration in zero and 30 grams per liter per hectare. Water deficit increased antioxidant enzymes activity, so that the increase in stressed plants at flowering stage was among the most prominent. Selenium spraying increased the anti-oxidative activity. Zeolite application of 10 tons per hectare, reduced stress effects and improved traits as RWC, WSD, soluble protein content, number of seeds, 100 seed weight and oil yield. According to the results, application of zeoilite under drought stress condition retain the moisture during stress and can be useful in improving plant growth and production.
Mehdi Zarrabi; Iraj Allah dadi; Gholam Abbas Akbari; Hamid Iran najad; Gholam Ali Akbari
Volume 12, Issue 2 , Autumn 2010, , Pages 37-50
Abstract
To study the seprate and combined effects of phosphorus fertilizer, Phosphate-solubilizing bacteria and mycorrhizal fungus on reducing drought stress damages of grain corn (SC704) during its vegetative stages under field conditions, an experiment was conducted as split plot based on RCBD with three replications ...
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To study the seprate and combined effects of phosphorus fertilizer, Phosphate-solubilizing bacteria and mycorrhizal fungus on reducing drought stress damages of grain corn (SC704) during its vegetative stages under field conditions, an experiment was conducted as split plot based on RCBD with three replications at College of Abouraihan, University of Tehran in 2009. Experimental factors were drought stress as main-plot (irrigation after 50 as control, 100 and 150 mm evaporation from pan class A) and fertilizer plus biofertilizer compounds as sub-plots. Drought stress began after seedling stage. Analysis of variance showed that drought stress significantly affected most of investigated traits such as number of row/ ear, number of kernel/ row, ear weight, 1000kernel weight and grain yield. All the measured traits in compounds phosphate-solubilizing bacteria, mycorrhiza fungies and triple super phosphate treatment were higher than other treatments under water deficit stress conditions. Frthermore, grain yield in triple super phosphate treat under severe water deficit stress conditions (1.81 ton/ha) were significantly less than normal irrigation (8.38 ton/ha) and low stress conditions (4.98 ton/ha). According to this experiment, seed inoculation with phosphate-solubilizing bacteria, mycorrhiza fungies and triple super phosphate compounds affected grain yield and harvest index significantly. This experiment showed that phosphate-solubilizing microorganisms can positively interact in promoting plant growth as well as in P uptake in maize plant, leading to improve plant tolerance under water deficit stress conditions.
Masoumeh Naeimi; Gholam Ali Akbari; Amir Hossein Shirani rad; Seyed Ali Mohammad Modarres-Sanavy; Seyed Ahmad Sadat nouri
Volume 12, Issue 2 , Autumn 2010, , Pages 63-71
Abstract
To evaluate the drought stress effect at terminal growth stage on yield of 12 rapeseed cultivars, an experiment was conducted with split-plot arrangement based on randomized complete block design with four replications at experimental field of Seed and Plant Improvement Institute, Karaj-Iran during 2005-06. ...
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To evaluate the drought stress effect at terminal growth stage on yield of 12 rapeseed cultivars, an experiment was conducted with split-plot arrangement based on randomized complete block design with four replications at experimental field of Seed and Plant Improvement Institute, Karaj-Iran during 2005-06. Irrigation at two levels (irrigation after 80 mm evaporation from class A pan, as control and withholding irrigation from silique formation until crop maturing time, as stress conditins allowcated to main plots and twelve rapeseed cultivars were used in sub plots. The number of silique in main stem, number of silique in lateral branches, silique fertility ratio and grain yield were low in drought stress conditions (p< 0.05). There were significant variations in all studied traits between evaluated cultivars. Grain yield in drought stress treatment was decreased (30%), when silique abortion was occurred due to water stress. In full irrigation treatment (control), the grain yield of Orient cultivar (2817 kg.ha-1) and at drought conditions, the grain yield of Opera cultivar (2058 kg.ha-1) were the highest amounts. The lowest oil percentage (39.8) and the highest protein percentage (23.3) were for Talaye cultivar, while the highest oil percentage (42.6) was for Option500 cultivar.