تأثیر کاربرد زئولیت جاذب اتیلن بر کیفیت گل‌های شاخه بریدۀ میخک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

2 دانشجوی سابق کارشناسی ارشد، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران

چکیده

تولید درونی گاز اتیلن و افزایش تنفس و حضور بیرونی این گاز در محیط به‌عنوان اصلی­ترین دلایل و عامل‌های کاهش ماندگاری گل شاخه بریدۀ میخک مطرح است و کاربرد جاذب­های اتیلن می­تواند در این رابطه مؤثر باشد. در این تحقیق تأثیر کاربرد زئولیت در سه سطح 0، 5/0 و 1 گرم پوشش داده شده با پرمنگنات پتاسیم (1 میلی­مولار) به­عنوان جاذب اتیلن در چهار سطح 0، 1، 2 و 3 درصد وزنی در کیفیت گل­های شاخه بریدۀ میخک رقم مهندسی قرمز (Dianthus caryophyllus L. ‘Red’) بررسی شد. سطوح تیماری پرمنگنات پتاسیم طوری انتخاب شد که بتواند کل حجم زئولیت در هر تیمار را به­طور کامل خیس کند. در هر ظرف محدود یا ایزوله (هر ظرف از روی هم قرارگرفتن دو لیوان شفاف پلاستیکی هرکدام به حجم 5/0 لیتر به دست آمد و محل اتصال با چسب شفاف به‌کلی بسته شد) به حجم 1 لیتر، یک شاخه گل به طول 30 سانتی­متر به همراه محفظۀ تیمار حاوی جاذب غنی‌شده قرار گرفت و آزمایش به‌صورت فاکتوریل در قالب طرح پایۀ کامل تصادفی با سه تکرار ارزیابی شد (تیمار شاهد بدون زئولیت و پرمنگنات پتاسیم بود). صفاتی مانند وزن تر و وزن خشک شاخه، عمر گلجایی، شاخص ثبات غشای یاخته‌ای، میزان تولید اتیلن، میزان سبزینه (کلروفیل)­های برگ و آنتوسیانین­های گلبرگ­ها ارزیابی شد. نتایج نشان داد، استفاده از زئولیت 5/0 گرم پوشش داده شده با پرمنگنات پتاسیم 2 درصد بیشترین عمر گلجایی را نسبت به شاهد داشت. افزون بر این دیگر ویژگی­های کیفی از جمله وزن تر، وزن خشک، کاهش وزن تر، ثبات غشای یاخته­ای، میزان آنتوسیانین­ها، سبزینه­ها و میزان اتیلن تولیدشده نیز تحت تأثیر معنی‌دار تیمار زئولیت سطح 5/0 گرم پوشش داده شده با پرمنگنات پتاسیم قرار گرفتند. بنابراین، این سطح از تیمار برای حفظ کیفیت گل­های شاخه بریده میخک رقم قرمز در چرخۀ حمل ونقل پیشنهاد می­شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of ethylene absorbent zeolite application on keeping cut carnation (Dianthus caryophyllus L. ‘Red’) quality

نویسندگان [English]

  • Azizollah Khandan-Mirkohi 1
  • Zahra Arabi 2
1 Assistant Professor, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 Former M.Sc. Student, Faculty of Agriculture, Islamic Azad University, Science and Research Branch, Tehran, Iran
چکیده [English]

The climacteric rises of ethylene production and respiration or exposure to the exogenous ethylene are more responsible for the relatively short life of carnations cut flowers. Applications of superabsorbents could lead to the decrease in the ethylene concentration. Zeolite at three levels of 0, 0.5 and 1 g coated with potassium permanganate (one mM) at 4 levels of 0, 1, 2 and 3% (weight basis) applied as treatments for the evaluation of carnation cut flowers (Dianthus caryophyllus L. ‘Red’) performance in isolated containers (one 30 cm cut flower per isolated container). The chosen levels of potassium permanganate were able to cover each of the zeolite treatments. The control treatment was without zeolite and potasium permanganate. A factorial experiment based on completely randomized design conducted with three replications. Characters such as fresh and dry weight of cut flowers, vase life, cell membrane maintenance index (electrolyte leakage), ethylene concentration, leaf chlorophylls content, and petal anthocyanins were evaluated. Results revealed that 0.5 g of zeolite coated with 2% of potassium permanganate was effective treatment to improve the vase life of cut flowers, to decrease the ethylene concentration in container, to maintain the membrane stability, leaf chlorophylls and petal anthocyanins. Results of this research could be used to improve the vase life of carnation cut flowers during transport or marketing.

کلیدواژه‌ها [English]

  • electrolyte leakage
  • growth regulators
  • Leaf chlorophyll
  • ornamental plants
  • petal anthocyanins
  • superabsorbents
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