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; 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.
