Mesbah Babalar; Arezo Asgarpour; Mohhamad Ali Asgari
Abstract
In present research the effects of four levels (0, 0.5, 1, 2 mM) of each of salicylic acid and putrescine treatments on the quality improvement of Granny Smith apple fruit were studied. Factorial experiment in randomized complete block with three replications on 16 trees, eighteen years in researcher ...
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In present research the effects of four levels (0, 0.5, 1, 2 mM) of each of salicylic acid and putrescine treatments on the quality improvement of Granny Smith apple fruit were studied. Factorial experiment in randomized complete block with three replications on 16 trees, eighteen years in researcher station of agriculture university of Tehran was designed. For this purpose the trees were sprayed with the treatments solutions in three stages including; immediately after full bloom, 45 days after full bloom, and 116 days after full bloom (two weeks before harvesting). After harvesting, three or four fruits were assigned for each sample and immersion into the treatment solutions for 30 min, packed, and moved to 1±0.5º C temperate and 85-90% relative humidity storage. Samples each 45 days in 5 stages exited from storage and evaluated for fruit weight loss, firmness, total soluble solids (TSS), treatable acidity (TA), (TSS/TA) and pH. The results showed, in to storage time fruit weight loss in treated fruits significantly (p
Mohammad Ali Askari; Mesbah Babalar; Marjan Sadat Hosseini; Majid Amani Beni
Abstract
The current study was conducted in order to evaluate the effect of Mono and Di-potassium phosphate combination (MDKP) on some quantitative and qualitative characteristics of Iranian pomegranate (CV. Malas-e-Saveh) in Pomegranate Research Center of Saveh city, in 2012. To adjust the pH of the solution, ...
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The current study was conducted in order to evaluate the effect of Mono and Di-potassium phosphate combination (MDKP) on some quantitative and qualitative characteristics of Iranian pomegranate (CV. Malas-e-Saveh) in Pomegranate Research Center of Saveh city, in 2012. To adjust the pH of the solution, the Mono Potassium Phosphate and Di-Potassium Phosphate combined with each other in the ratio of 1:3, and their combined effects (Mono and Di-potassium phosphate) were studied. This experiment was carried out based on randomized complete block design (RCBD) with four concentrations of MDKP (0, 0.05, 0.1 and 0.2%) at two stages (Full bloom stage and one month after full bloom) and three replications per treatment. The results showed that foliar spray at concentrations of 0.1% and 0.2% resulted in significant increase in yield per tree, fruit number, Titrable Acidity (TA) compared to control treatment, so that 0.1% spraying caused 12/16% increase in yield per tree and 9/17% enhancement in fruit number in comparison to control treatment. Furthermore, foliar spray brought about significant enhancement in aril juice and color intensity of extract in which the highest amount of aril juice and color intensity of extract was obtained in 0.2 % and 0.1 % treatments, respectively. Foliar spray at 0.2 % concentration resulted in the reduction of Total Soluble Solids/Titrable Acidity ratio by 10% compared to control treatment. In conclusion, the results of this study show that MDKP spray at 0.1 % concentration was more effective than other concentrations.
Mesbah Babalar; Javad Hashemi; Yunes Mostufi
Abstract
Sulforaphane is a strong anticarsenogen compound which is produced in broccoli. It seems salt stress improves sulforaphane production via systemic acquired resistance. To obtain suitable salt concentration and for having more content of sulforaphane with controlling germination percentage, NaCl in 5 ...
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Sulforaphane is a strong anticarsenogen compound which is produced in broccoli. It seems salt stress improves sulforaphane production via systemic acquired resistance. To obtain suitable salt concentration and for having more content of sulforaphane with controlling germination percentage, NaCl in 5 levels 0, 50, 100, 150, 200 mM (0, 4.53, 9.125, 13.68, 18.25 dS/m ) and salicylic acid in 3 levels (0,100, 200 µM) were examined. A logistic regression model was used to assess the effects of treatments on the maximum cumulative germination percentages, rate of increase, and germination lag times. Sulphoraphan and vitamin C were determind by HPLC method. Combination between salicylic acid and chloride sodium improved sulforaphane concentration. The 100 µM salicylic acid with 100 mM chloride sodium was the best treatment as the highest concentration of sulforaphane and vitamin C with perfect growth factors achieved in the treatment.
Mesbah Babalar; Marjan Sadat Hosseini; Mohammad Ali Askari; Sohrab Davarpanah
Abstract
Pears are among the most important fruits in all the temperate regions in about 50 countries of the world. "Shahmiveh" and "Spadona" pears, sprayed at three stages at harvest with different concentrations putrescine (0, 0.5, 1 and 2 mM) and post harvest dipping at the same concentrations putrescine and ...
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Pears are among the most important fruits in all the temperate regions in about 50 countries of the world. "Shahmiveh" and "Spadona" pears, sprayed at three stages at harvest with different concentrations putrescine (0, 0.5, 1 and 2 mM) and post harvest dipping at the same concentrations putrescine and also dip into heat treatment (40 and 50 °C and control). Fruits were stored at 0±1 °C for 5 month. The factorial experiment was conducted using a completely randomized design of three replications. During the storage period, Sampling were carried out every three weeks and some of the qualitative and quantitative traits such as surface color, weight loss, firmness, pH, titrable acidity, total soluble solids, flavor index and vitamin C were measured. Results showed in Shahmiveh ratio to Spadona cultivar was upper firmness, pH and flavor index. Hue angle, lightness, weight loss, TA and TSS in Spadona cultivar was higher than Shahmiveh cultivar. 1 and 2 mM putrescine treatments showed maximum firmness and minimum pH, TSS and flavor index in both cultivars. Heat treatment at 40 and 50 °C respectively in Shahmiveh and Spadona increased TSS and fruit flavor index. In total, Spadona with suitable quality and quantity properties for the purpose of marketing and keeping in store is better than Shahmiveh.
Azam Seyyedi; Ali Ebady; Mesbah Babalar; Behrooz Saeedi
Abstract
Abstract
Strawberry is one of the most important fruit crops in the world. In this study, effect of different plant densities were studied on yield and fruit quality of strawberry 'Selva' in greenhouse and laboratories of university college of agriculture and natural resources during 2002-2003. Uniform ...
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Abstract
Strawberry is one of the most important fruit crops in the world. In this study, effect of different plant densities were studied on yield and fruit quality of strawberry 'Selva' in greenhouse and laboratories of university college of agriculture and natural resources during 2002-2003. Uniform stolens of strawberry were planted in holes of plastic column according to Factorial in Completely Randomized Block Design with three replications. In each column, 16 or 24 stolens were planted and space among columns was 75 or 100 cm. according to statistical design. Results showed that number of plants in each column had significant effect on each plant yield. However, different space among columns had significant effect on each plant and each column yield in a way that yield was higher when 16 stolens were planted in each column and distance among columns was 100cm. In each column, stolens in top of plastic column had higher yield compared with those in bottom of plastic column (each plant at the top 50 cm. of plastic top had 50gr more yield which ended up to 300gr more yield for that part of column). In spite of higher yield for above-mentioned treatment, plant density of 24 plants per column and distance of 75cm. among columns produced more fruits per unit (m2) of greenhouse. The above-mentioned treatments had some effects on most qualitative characteristics of fruits such as length and diameter of fruits, vitamin C content, pH, TSS, TA, TSS/TA, which generally were higher for treatment of 16 plant/column and distance of 100cm. among columns. However, these differences did not reach significant level.
Keywords: Strawberry, Selva, Plant density, Vertical system, Yield, Quality
Azadeh Esfandiari; Toktam Sadat Taghavi; Mesbah Banalar; Mojtaba Delshad
Abstract
Abstract
In order to provide optimal yield and quality of tomato fruit (Lycopersicon esculentum Mill. cv. Beril), different growing media for soilless culture of tomato plants were studied. seedling of tomato (Lycopersicon esculentum Mill, cv. Beril ) were cultivated in perlite, mixture of perlite with ...
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Abstract
In order to provide optimal yield and quality of tomato fruit (Lycopersicon esculentum Mill. cv. Beril), different growing media for soilless culture of tomato plants were studied. seedling of tomato (Lycopersicon esculentum Mill, cv. Beril ) were cultivated in perlite, mixture of perlite with NH4-zeolite and with raw zeolite (z:p ratio 10v:90v) and fed by two nutrient sources: a) complete nutrient solution (N+) b) nutrition solution with 30% decrease in N concentration. The experimental design was split plot with complete randomized block design. Fruit quality and yield were determined during growth. Result indicated that fruit yield, length of fruits and titrable acidity decreased and small fruits increased with reducing nitrogen in solution. Solution didn’t significally effects in yield. Fruit weight were reduced significantly with nitrogen decreasing in nutrition solution, But solution types didn’t affect on yield. Media significantly affected yield, Weight of fruit, number of fruit per plant and medium fruits (70-100g). The highest of this characteristic obtained in saturated zeolite and perlite. Interaction effect of incomplete solution and saturated zeolit media caused a reduction in weight of fruit, dry mater, small fruit ratio in yield and vitamin C in comparison to other media. There weren’t significantly difference among TSS, firmness and density.
Key words: soilless culture, media, zeolite, nitrogen
Abdolsattar Darabi; Mesbah Babalar; Abdolkarim Kashi; Mohsen Khodadadi
Abstract
Abstract
An experiment was conducted to study growth analysis and evaluation of change in simple non- structural carbohydrates (sucrose, glucose and fructose) during bulb formation of Ghermez Azarshahr , Zargan, Safid naishaboor and Safid Qom cultivars in randomized complete block design containing ...
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Abstract
An experiment was conducted to study growth analysis and evaluation of change in simple non- structural carbohydrates (sucrose, glucose and fructose) during bulb formation of Ghermez Azarshahr , Zargan, Safid naishaboor and Safid Qom cultivars in randomized complete block design containing three replications. Seeds were sown in nursery in early February and seedlings were transplanted in early May. During initiation of bulbing carbohydrates accumulated in leaf bases. Before and after bulb formation (about 20 days after bulb formation) the most simple non-structural carbohydrates content was found in Safid Qom cultivar. The maximum and minimum increasing percent of simple non- structural carbohydrates components belong to glucose and sucrose respectively. The results of growth analysis indicated that the period of slow growth had been about 75 days after emergence (for all studied cultivars) and then the period of rapid growth of leaf has begun. The bulb growth rate of Zargan cultivar during the most parts of bulb development stage was higher than other culitivars, due to this reason and earliest date of bulbing, yield of mentioned cultivar was higher as compared with other cultivars. A high significant positive correlation ( r = 48% ) was found between relative growth rate and net assimilation rate at 1% level. Zargan cultivar produced the highest total and marketable yield, so that mentioned cultivar is recommended for Karaj region.
Key words : Onion, Yield, Carbohydrate, Growth analysis, Net assimilation rate
Mastaneh Ahrar; Mojtaba Delshad; Mesbah Babalar
Abstract
Abstract
Soilless culture of greenhouse vegetables has been a fast developing section in Iran during recent years. Most growers use hydroponics systems with artificial substrates. Some of the used substrates have low water retention which results in wasting a great deal of solution. On the other hand, ...
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Abstract
Soilless culture of greenhouse vegetables has been a fast developing section in Iran during recent years. Most growers use hydroponics systems with artificial substrates. Some of the used substrates have low water retention which results in wasting a great deal of solution. On the other hand, low vigor of cucumber root in water and fertilizer absorption, especially in low media temperatures causes decrease of absorption and yield as well as appearing deficiency symptoms. In this research we studied effect of hydrogel amendment and Cucurbita pepo. Rootstock on hydroponicaly cultured greenhouse cucumber. Results showed that incorporating hydrogel into media could improve perlit physical properties and increased it’s water holding capacity. This condition could also decrease leaching fraction and increase yield and water/ fertilizer use efficiency. Furthermore, grafted plants grown in non-amendment substrates had higher yield and water/ fertilizer use efficiency compared to non grafted ones.
Key words: Water holding capacity, Leaching fraction, Yield, Super absorbent
