اثر محلول‌پاشی پوتریسین و اسپرمین بر افزایش عمر گلجایی آلسترومریا رقم ‘سوکاری’

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی‌ارشد گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه زنجان، زنجان، ایران

2 کارشناس ارشد گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه زنجان، زنجان، ایران

3 استادیار گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه زنجان، زنجان، ایران

چکیده

به‌منظور بررسی اثر محلول‌پاشی قبل و پس از برداشت پلی‌آمین‌ها بر افزایش عمر گلجایی آلسترومریا رقم ‘سوکاری’ (Alstroemeriaaurantica cv.Sukari)، آزمایشی به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با دو نوع پلی‌آمین (پوتریسین و اسپرمین) در چهار سطح (صفر، 5، 10 و 20 میلی‌گرم در لیتر) انجام گرفت. تیمار 20 میلی‌گرم در لیتر پوتریسین و اسپرمین عمر گلجایی را به‌ترتیب 19 و 22 روز، و تیمار 10 میلی‌گرم به‌ترتیب 14 و 18 روز افزایش دادند. تیمار پوتریسین و اسپرمین در هر سه مرحلۀ نمونه‌برداری اثر معناداری بر شاخص کلروفیل برگ داشت. در مرحلۀ اول، نمونه‌برداری غلظت 20 میلی‌گرم در لیتر پوتریسین و غلظت 10 و 20 میلی‌گرم در لیتر اسپرمین اثر معناداری بر وزن تر و خشک داشت. غلظت‌های 10 و 20 میلی‌گرم در لیتر پوتریسین و اسپرمین به‌طور معناداری فعالیت آنزیم کاتالاز را در مراحل اول و دوم نمونه‌برداری افزایش داد و اثر اسپرمین بیشتر از پوتریسین بود. تیمار 20 میلی‌گرم در لیتر اسپرمین به افزایش فعالیت آنزیم سوپراکسیددیسموتاز منجر شد و فعالیت آن را تا مرحلۀ سوم نمونه‌برداری افزایش داد. پوتریسین و اسپرمین به‌طور معناداری سبب کاهش فعالیت آنزیم کلروفیلاز برگ و پکنیناز و فنل‌اکسیداز گل آلسترومریا شد و بهترین تیمار، 20 گرم در لیتر اسپرمین بود. تیمارهای 10 و 20 میلی‌گرم در لیتر پوتریسین و اسپرمین اثر معناداری بر افزایش مقاومت غشایی گلبرگ در مراحل اول و دوم نمونه‌برداری داشت. براساس نتایج تحقیق حاضر، اسپرمین 20 میلی‌گرم در لیتر و پوتریسین 10 میلی‌گرم در لیتر بیشترین تأثیر را در افزایش عمر گلجایی و کاهش پیری گل‌های آلسترومریا داشتند. اسپرمین در افزایش عمر گلجایی آلسترومریا مؤثرتر از پوتریسین بود.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of putrescine and spermine spraying on increasing vase life of alstroemeria (cv. ‘Sukari’)

نویسندگان [English]

  • Zobeydeh Alborz 1
  • Friborz Habibi 2
  • Seyed Najmadin Mortazavi 3
1 . M.Sc. Student, Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 . M.Sc., Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3 Assistance Professor, Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
چکیده [English]

In order to study the effect of pre and postharvest polyamines spraying on increasing vase life of alstroemeria (Alstroemeriaaurantica cv.Sukari), an experimental was conducted on completely randomized factorial design with two types polyamines (putrescine, spermine) in four levels (zero, five, 10, 15 and 20 mg/l). Results showed that, 20 mg/l of putrescine and spermine treatments increased vase life to 19 and 20 days, and 10 mg/l increased vase life to 14 and 18 days, respectively. Putrescine and spermine treatments had a significant effect on leaf chlorophyll index in three stages of sampling. In the first stage of sampling, 20 mg/l putrescine concentration and 10 and 20 mg/l spermine concentration had a significant effect on fresh and dry weight. Concentrations of putrescine and spermine (10 and 20 mg/l) significantly increased catalase enzyme activity in the first and second stage of sampling and spermine effect was more than putrescine. Treatment of 20 mg/l spermine significantly increased superoxide dismutase enzyme activity and increased its activity until third stage of sampling. Putrescine and spermine significantly decreased chlorophyllase, pectinase and phenoloxidase and best treatment was 20 mg/l spermine. Treatments of putrescine and spermine (10 and 20 mg/l) had significant effect on increasing membrane resistance in the first and second stage of sampling. According to results it can be said that, spermin 20 and putrescine 10 mg/l had most effect on increasing vase life and decreasing senescence of alstroemeria flowers. Spermin was more effective than putrescine in increasing vase life of alstroemeria flowers

کلیدواژه‌ها [English]

  • Catalase
  • Chlorophyllase
  • Pectinase
  • Phenoloxidase
  • superoxide dismutase

 

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