Jafar Hajilou; Mohammad Asadollahi; Shabnam Fakhimrezaei; Gholamreza Dehghan
Abstract
In order to determine the effects of Naphthalene acetic acid (NAA) on thinning intensive and fruit qualitative and anti-oxidant characteristics in two peach cultivars, an experiment was conducted in Research Station in Agriculture at the University of Tabriz in 2013 The experiment was arranged as factorial ...
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In order to determine the effects of Naphthalene acetic acid (NAA) on thinning intensive and fruit qualitative and anti-oxidant characteristics in two peach cultivars, an experiment was conducted in Research Station in Agriculture at the University of Tabriz in 2013 The experiment was arranged as factorial based on randomized complete block design in three replications in 'Anjiry maleki' and 'Kosary' cultivars. Treatments in four levels (0, 20, 40 and 60 ppm) after 14 days from full bloom when fruitlet diameter was 8-12 mm on selected branch was applied. Results showed that all treatments, caused effective thinning fruit in each two cultivars while in 'Kosary' cultivar abscission percentage was higher than 'Anjiry maleki'. All hormone concentrations were caused increasing length, diameter, vitamin C, pH, total solution soiled (TSS) in two cultivars. Amount of the fruit firmness was not significantly between control and hormone levels. For the both studied cultivars, the highest antioxidant activity belonged to NAA treatment in 40 mg/L concentration. Although, the NAA treatment in different concentrations had no significant effect on total phenol and flavonoid contents of fruit juice, it was improved fruit quality and thinning intensive in two peach cultivars.
Ghasem Sartip; Jafar Hajilou
Abstract
To determine the effects of pre-harvest salicylic acid (SA) treatments on postharvest life and quality of apricot fruits, four different concentrations (one, 1.5, three and 4.5 mM) were applied six days before harvesting of apricot fruits cv. ‘Shamlou’. Fruits harvested at commercial maturity ...
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To determine the effects of pre-harvest salicylic acid (SA) treatments on postharvest life and quality of apricot fruits, four different concentrations (one, 1.5, three and 4.5 mM) were applied six days before harvesting of apricot fruits cv. ‘Shamlou’. Fruits harvested at commercial maturity stage and stored at 2ºC with 90 percent RH on the same day for a period of three weeks. The fruit was evaluated for weight loss, flesh firmness, total soluble solid (TSS) contents, titratable acidity (TA), ascorbic acid contents, total phenolic contents and total flavonoids in treated and nontreated fruits. Results showed that salicylic acid treatments significantly exhibited weight loss and flesh firmness compared with control. At the end of storage, the highest ascorbic acid content and total phenolic content was observed in 4.5 mM SA treated fruits. The highest flesh firmness, titratable acidity and flavonoids were observed at three mM SA treated fruits and at the end stage of storage. The lowest weight loss, TSS and pH were recorded at 3mM SA treated fruits.