fatemeh nazoori; Siamak Kalantari; Nader Doraki; Alireza Talaie; Amanollah Javanshah
Abstract
In order to improve the quality and the possibility of fresh pistachio exports , the impact of different harvest time on storage of ‘Ahmadaghaii’ Pistachio was investigated. In 2011, pistachios harvested at three stages of fruit ripening (40, 70 and 100 percent of hulling) in hulling fresh, ...
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In order to improve the quality and the possibility of fresh pistachio exports , the impact of different harvest time on storage of ‘Ahmadaghaii’ Pistachio was investigated. In 2011, pistachios harvested at three stages of fruit ripening (40, 70 and 100 percent of hulling) in hulling fresh, fresh without hulling and dried pistachio packaged in pulpy bag and held in two-temperature storage (1 ± 4 and 1 ± 12 ° C) for 45 Days. Data were analizaed with factoriel in format of randomized completely design in three replications. The results showed expedition and delay in harvest, increases period of storage and temperature result to increes of endocarp spots and low fruit retention. Increase of temperature and during storage result to decress of taste and low fruit firmness and kernel damage, acidity, peroxide, water loss were increase. This data showed that to keep fruit fresh pistachio, harvesting in stage of 70-80% of ripening, processing with fresh hulling and storage in 1 ± 4 ° C temperature, result to retention of fresh pistachio to 45 days.
Fatemeh Nazoori; Siamak Kalantari; Amanollah Javanshah; Nader Doraki; Alireza Talaie
Abstract
This study was done to evaluate the effects of harvest time on some factor of ‘Ahmadaqaie’ pistachio nuts in Rafsanjan. In three consecutive years (2009-2012) during three stages of friut ripening (40, 70 and 100 percent of hulling), fruit was harvested and physiological and biochemical parameters ...
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This study was done to evaluate the effects of harvest time on some factor of ‘Ahmadaqaie’ pistachio nuts in Rafsanjan. In three consecutive years (2009-2012) during three stages of friut ripening (40, 70 and 100 percent of hulling), fruit was harvested and physiological and biochemical parameters were measured. The experiments were conducted as randomized complete block design with compound analysis in three replications. Most of the traits were influenced by harvest time more than latitude and length of piistachio. The highest amount of protein (20.5%), chlorophyll content (6 mg) and inflorecence bud retention (61%) was in immature nuts (40 percent). Pistachios harvested in stage two (70%) had the best quality and quantity despite of green kernal and good taste of immature pistachio nuts. Although third harvest (100%) increased the dry weight and percent of nut splitting, but have some problems including increasing early splitting, endocarp yellowing, nut drop under the trees, and finally difficult to harvest operations which will increase fungal infections and reduce the nutritional value. In the best time of harvesting in normal condition, the nutritional value, splitting and dry matter were high that roughly coincides with the 70 to 80 percent ripening stage.
Kourosh Vahdati; Hassan Bahrami Sarmandi; Siamak Kalantari
Volume 12, Issue 2 , November 2010, , Pages 73-82
Abstract
Somatic embryos which were derived from immature cotyledons of a Persian walnut genotype had been grown on DKW medium supplemented with gelrite 0.3% and ABA (2 mg l-1). For maturation, somatic embryos were treated with chilling pre-treatment (one month in dark at (3-4C), different desiccation methods ...
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Somatic embryos which were derived from immature cotyledons of a Persian walnut genotype had been grown on DKW medium supplemented with gelrite 0.3% and ABA (2 mg l-1). For maturation, somatic embryos were treated with chilling pre-treatment (one month in dark at (3-4C), different desiccation methods (fast, slow and full) and combination of chilling and desiccation treatments. The experiment was conducted as RCD in tissue culture laboratory of College of Abouraihan, University of Tehran, Iran in 2007. After three weeks, plantlets obtained from this treatment were transferred to six plantlets developing media (including full and half strength DKW with different levels of sucrose and activated charcoal). Without any pretreatment, 26% of somatic embryos germinated, while those treated with cold-pretreatment germinated at 54% with both shoots and roots. Somatic embryos treated with fast, slow and full desiccation, germinated at 27, 37 and 57% with both shoots and roots, respectively. Cold storage for two months in combination with full desiccation resulted in higher amounts of somatic embryos germination (73%) which had both shoots and roots. Adding activated charcoal and sucrose, also reducing amounts of macro and micro nutrients did not have significant effect on shoot length. Adding activated charcoal enhanced root development.