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Register a new userThe Effect of 1-Mcp and CaCl2 Treatment (Separated or Compound) on the Ripening and Ethylene Production of ‘Cox’s Orange Pippin’ Apples During Storage Stage
تأثير معاملة ثمار التفاح صنف ‘Orange Cox ‘ بالمركبين MCP-1 و CaCl2 منفردين أو مقترنين في عملية نضجها و إنتاج الإثيلين منها في أثناء تخزينها
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عبد الرحمن الشيخ( باحث )
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عوملت ثمـار التفـاح الـصنف"Pippin Orange Cox "بمـادة MCP-1 أو CaCl2 و كـذلك MCP-1 + CaCl2 بعد القطاف لمعرفة تأثيرها في التنفس و إنتاج الإيثيلين ضمن الثمرة، ثـم خزنـت الثمار بعد معاملتها في شروط الهواء العادي في حرارة 3 م أو 10 م لمدة 0 ،2 ،4 ،6 ،8 ،10 أسابيع، و بعد انتهاء كل مرحلة من مراحل التخزين، أُعيد تخزين أربع ثمار من كل معاملة فـي أوعيـة زجاجيـة خاصة لقياس معدل إنتاج CO2 و C2H4 مدة أسبوع في 20 م؛ و قد تبين انخفاض معدل التـنفس بـشكل معنوي في الثمار المعاملة بالمركب MCP-1 أو CaCl2+MCP-1 مقارنة بالثمار المعاملـة بمحلـول كلوريد الكالسيوم أو غير المعاملة، كما لوحظ انخفاض معنوي من يوم إلى آخر في معدل تـنفس الثمـار و لاسيما تلك الثمار التي خزنت في حرارة 3 م ، و لم يلاحظ تأثير معنوي لدرجة حرارة التخزين في معـدل تنفس الثمار؛ كما أدت معاملة الثمار بالمركب MCP-1 أو CaCl2+MCP-1 إلى انخفاض معنوي فـي معدل إنتاج الإيثيلين في مرحلة ما بعد التخزين (عمر الرف).
The effect of 1-MCP, CaCl2 and CaCl2 + 1-MCP treatments on the respiration and ethylene production of ‘Cox’s Orange Pippin’ apples was investigated. Treatments were applied at harvest and apples stored under air storage (3°C or 10°C) for 0, 2, 4, 6, 8 and 10 weeks. At storage removal apples were held at 20°C for 7 days shelf-life and respiration and ethylene production measured. The CO2 rate in the CaCl2 and CaCl2 + 1-MCP treatments was significantly lower than either the CaCl2 treatment or untreated control. The CO2 rate reduced steadily during shelf-life especially for the 3°C stored fruit. A significant effect of storage temperature on the CO2 rate during shelf-life could not be determined. Application of 1-MCP or CaCl2+1-MCP decreased significantly ethylene production during shelf-life at all storage periods.
References used
Biale, J. B. and Young, R. E. (1981). Respiration and ripening in fruitsretrospect, in Recent Advances I the Biochemistry of Fruit and Vegetables (eds J. Friend and M. J. C. Rhodes) , Academic Press, London, PP. 1-39
Brady, C, J. (1987). Fruit ripening. Annual Reviews of Plant Physiology, 38, 155-178
Copper, T., and Bangerthm F. (1976). The effect of Ca and Mg treatments on the physiology, chemical composition and bitter pit development of, Cox Orange, apple. Hort. Sci. 5:49-57
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This research carried out to estimate the importance of use of 1-MCP in increasing
shelf life of Japanese persimmon ,var (Hachiya) , and maintaining fruits quality. The fruits
were treated with different concentrations of 1-MCP (0.5-1-1.5) ppm soon
ly after harvest
at 20Cᵒ during 24 h, then stored for 6 months at controlled conditions (2Cᵒ and 85% of
relative humidity). The samples were taken periodically (every month) to study the
changes in fruits composition during storage period.
The results showed that treatment with 1-MCP keeps fruits at higher degree of
firmness compared to the control, and decreased the loss in weight at storage period.The
treatment with 1-MCP decreased as well the changes in the fruits composition of Vitamine
c, total acidity (TA) compared to the control.
These results indicate that treatment with 1-MCP is effective in increasing shelf-life
of Japanese persimmon fruits var (Hachiya).
Apple Fruits (Malus domestica Bork. cv. 'Golden Delicious') were
harvested at three successive dates with intervals of one week between each
date. The fruits were packaged with polyethylene films and then stored at 0±1
oC to study the effect of th
ese factors on the quality of the fruits and their role
to reduce weight loss after harvest. The natural loss of the fruit weight and
quality indices: fruit firmness, total soluble solids, titrable acidity and starch
content were studied.
تأثير موعد الجني والمعاملة بمادة 1- ميتيل سايكلو بروبان (1-MCP ) في جودة ثمار الكاكي صنف ( Hachiya ) أثناء التخزين المبرد
This research was conducted during 2010-2011 growing seasons on 15 years old
trees of “Washington Navel” variety grafted on Citrus aurantium (sour orange) stock and
planted in the village of “Al-hinnady” in Lattakia. To determine the appropriate pr
eharvest
and post-harvest treatments to get the most production and better quality of fruits.
The study was conducted on winter date (15th of Febraury), during 2015 and
2016 seasons, to study the effect of spraying calcium chloride CaCl2
concentrations (2, 4, and 6%), on the manufacture traits assigned in randomized
completely block design (RCBD) with four replicates.
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