Effects of Different Preservative Solutions on Vase Life of Narcissus tazetta Cut Flowers
محورهای موضوعی : مجله گیاهان زینتی
Hassan Bayat
1
(Department of Horticultural Science, Faculty of Agriculture, University of Birjand, Iran)
Mohamad Aminifard
2
(Department of Horticultural Science, College of Agriculture, University of Birjand, Birjand, Iran)
کلید واژه: Ascorbic acid, citric acid, ethanol, silicon, Total soluble carbohydrate,
چکیده مقاله :
The main aim of this study was to evaluate the effects of silicon (Si), ethanol (Et), ascorbic acid (AA) and citric acid (CA) on vase life of Narcissus tazetta L. cv. ‘Shahla’cut flowers. For this purpose, an experiment based on completely randomized design was conducted with Si (5, 10 and 20 mM), Et (2 and 4%), AA (100, 200 and 300 mg L-1), CA (100, 200 and 300 mg L-1) and control (distillated water) with 3 replications and 3 samples (individual flowers) for each replicate. The results showed that addition of all preservatives to vase solutions significantly increased relative fresh weight, water uptake and vase life of cut flowers in comparison to control. Relative fresh weight of treated cut flowers with Si (5 mM) was higher than other treatments during all days of experiment and this treatment increased relative fresh weight and total water uptake by 16 and 27% compared to control (day 7 of experiment). Silicon (5 mM) also increased fresh weight of control flower (without stem) from 0.185 to 0.259 g (40% increases). The highest dry weight of flower (0.057 g) was obtained from 300 mg. L-1AA, by 32% increases when compared to control flower. Application of Si (5 mM) extended vase life of cut flowers by 2.66 day in comparison to control. According to the results of this experiment, Si, Et, AA and CA as safe and cheap compounds are suitable for extending the vase life of N. tazetta cut flowers.
هدف اصلی این مطالعه بررسی اثر سیلیسیوم (Si)، اتانول (Et) اسید‌اسکوربیک (AA) و اسید‌سیتریک (CA) بر عمر گلجایی گل نرگس شیراز رقم شهلا (Narcissus tazetta L. cv. ‘Shahla’) بود. بدین منظور، آزمایشی در قالب طرح کاملاّ تصادفی شامل سیلیسیوم (0، 5، 10 و 20 میلی‌مولار)، اتانول (2 و 4%)، اسیدآسکوربیک (100، 200 و 300 میلی‌گرم در لیتر)، اسید‌سیتریک (100، 200 و 300 میلی‌گرم در لیتر) و شاهد (آب مقطر) با سه تکرار و 3 قرائت (شاخه گل) در هر تکرار انجام شد. نتایج نشان داد که اضافه کردن مواد نگه‌دارنده به محلول گلجایی به طور معنی‌داری وزن تر نسبی، جذب آب و عمرگلجایی گل‌های شاخه بریده را در مقایسه با گل‌های شاهد افزایش داد. وزن تر نسبی شاخه‌های گل تیمار شده با سیلیسیوم (5 میلی‌مولار) در تمام روزهای آزمایش بالاتر از سایر تیمارها و شاهد بود و استفاده از این تیمار، وزن تر نسبی و جذب کل آب را به میزان 16 و 27 درصد نسبت به شاخه‌های گل شاهد افزایش داد (روز 7 آزمایش). سیلیسیوم (5 میلی‌مولار) همچنین وزن تر گل‌های شاهد (بدون ساقه) را از 185/0 به 259/0 گرم افزایش داد (40٪ افزایش). بالاترین وزن خشک گل (057/0 گرم) از تیمار اسیدآسکوربیک 300 میلی‌گرم در لیتر حاصل شد که در مقایسه با گل‌های شاهد 32 درصد افزایش داشت. کاربرد سیلیسیوم (5 میلی‌مولار) عمر گلجایی گل‌های شاخه بریده را 66/2 روز نسبت به گل‌های شاهد افزایش داد. با توجه به نتایج حاصل از این آزمایش، استفاده از سیلیسیوم، اتانول، اسیدآسکوربیک و اسید سیتریک به عنوان ترکیبات ایمن و ارزان برای افزایش عمر گلجایی گل بریده نرگس (N. tazetta) مناسب هستند.
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