اثر پلی‌آمین‌ها بر ویژگی‌های مورفوفیزیولوژیکی گل شاخه‌بریدنی زنبق (‏Iris hollandica 'Blue ‎Magic'‎‏)‏

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران

2 استادیار، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران

3 استاد، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

چکیده

پلی‌آمین‌ها گروهی از پلی‌کاتیون‌های آلی با وزن مولکولی کم هستند که دو یا تعداد بیشتری گروه آمین دارند و به دلیل نقش مثبت آنها در بهبود فرآیندهای فیزیولوژیکی گیاه، کاربرد آنها در کشاورزی رو به افزایش است. این پژوهش گلخانه‌ای به منظور بررسی اثر پلی‌آمین‌ها بر ویژگی‌های مورفوفیزیولوژیکی گل شاخه‌بریدنی زنبق (Iris hollandica 'Blue Magic') به صورت فاکتوریل در قالب طرح کاملاً تصادفی با دو نوع پلی‌آمین پوتریسین و اسپرمین هر کدام در چهار سطح (صفر، 5/0، 1 و 2 میلی‌مولار) انجام شد. محلول پاشی تیمار­ها از مرحله 3 برگی، هر هفته یک بار به مدت 9 هفته انجام شد. نتایج نشان داد پوتریسین و اسپرمین عمر گلجای و قطر گل را افزایش دادند و بیشترین تأثیر مربوط به تیمار پوتریسین با غلظت 2 میلی‌مولار بود. بالاترین میزان آنتوسیانین­های گلبرگ­ها و محتوای کلروفیل کل برگ ها در گیاهانی که با 2 میلی‌مولار پوتریسین و اسپرمین تیمار شده بودند، مشاهده شد. تمام تیمارهای پلی‌آمین­ باعث افزایش وزن تر و مواد جامد محلول گل ها پس از برداشت شدند و بیشترین افزایش با تیمار پوتریسین 2 میلی‌مولار به‌دست آمد. بر اساس نتایج تحقیق تیمارهای پوتریسین 2 میلی‌مولار و اسپرمین 1 میلی‌مولار با توجه به کاهش میزان نشت­یونی، تجمع کمتر مالون­دی­آلدهید و بهبود فعالیت آنزیم­های آنتی‌اکسیدان کاتالاز و آسکوربات­پراکسیداز بهترین نتایج را در بر داشتند.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of polyamines on morphophysiological characteristics of Dutch iris ‎‎(Iris hollandica 'Blue Magic') cut flower

نویسندگان [English]

  • Seyed Hashem Mortazavi 1
  • Masoud Arghavani 2
  • Moazzam Hassanpour Asil 3
  • Azizollah Kheiri 2
1 Ph. D. Candidate, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 Assistant Professor, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3 Professor, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
چکیده [English]

Polyamines are low molecular weight organic polycations containing two or more amino groups and their application in agriculture is going to increase as a result of their positive impact on plant physiological responses. This greenhouse study was applied in a factorial experiment based on completely randomized design to evaluate the effects of polyamines (putrescine and spermine) at four levels (0, 0.5, 1 and 2 mM) on morphophysiological characteristics of Dutch iris (Iris hollandica 'Blue Magic'). Foliar spraying treatments were performed from 3-leaf stage, weekly. The results showed that putrescine and spermine increased vase life and flower diameter and the highest record was observed in 2 mM putrescine treatment. Plants that treated with 2 mM putrescine and spermine had the greatest amount of petals anthocyanin and leaf chlorophyll content. All polyamines treatments increased post-harvest flower fresh weight and petals soluble solids content and the maximum rise was detected by 2 mM putrescine application. According to the results of this study, the best results were found in both 2 mM putrescine and 1 mM spermine treatments, where the lowest electrolyte leakage and malondialdehyde content and the most antioxidant enzymes catalase and ascorbate peroxidase activities was obtained.

کلیدواژه‌ها [English]

  • Catalase
  • petals anthocyanin
  • putrescin
  • spermine
  • vase life
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