نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه علوم باغبانی و زراعی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 استادیار، گروه علوم باغبانی و زراعی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

3 دانشیار، دانشکده کشاورزی، دانشگاه شاهد، تهران، ایران‏

4 دانشیار، گروه کشاورزی، دانشگاه پیام نور، تهران، ایران

10.22059/ijhs.2020.302255.1800

چکیده

به منظور بررسی تأثیر عصاره برگ حنا و سدیم نیتروپروساید بر برخی خصوصیات فیزیولوژیکی و عمر گلجایی گل شاخه بریده داوودی، آزمایشی به­صورت فاکتوریل در قالب طرح کاملاً تصادفی در سه تکرار انجام شد. عامل اول عصاره برگ حنا در سه سطح (صفر، 100 و 200 ppm)، عامل دوم سدیم نیتروپروساید در سه سطح (صفر، 5/0 و 1 میلی­مولار) و عامل سوم زمان نمونه­برداری در سه سطح (روز اول، روز ششم و روز دوازدهم) بود. با افزایش زمان نمونه­برداری قطر گل، محتوای کلروفیل، محتوای نسبی آب و وزن تر نسبی کاهش و فعالیت آنزیم­های آنتی­اکسیدانی افزایش معنی­داری پیدا کرد. غلظت­های بالای عصاره حنا و سدیم نیتروپروساید فعالیت آنزیم­های آنتی‌اکسیدانی را کاهش داد و باعت بهبود پارامترهای کیفی گل داوودی شد که نشان­دهنده اثرات مثبت آنها بر از بین بردن رادیکال­های آزاد می­باشد. تیمار عصاره حنا در روز ششم نمونه­برداری بهترین تیمار جهت بهبود پارامترهای گل داوودی بود. تیمار عصاره برگ حنا و نیترپروساید مانع کاهش مقدار کلروفیل a، کلروفیل b و کلروفیل کل در برگ گل داووی شدند. نتایج بیانگر تأثیر مثبت عصاره حنا و سدیم نیتروپروساید بر افزایش طول عمر پس از برداشت گل شاخه بریده داوودی بود.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Hana leaf extract and sodium nitroproside on some physiological ‎characterestics and vase life of chrysanthemum cut flower ‎ ‎(Chrysanthemum morifolium)‎

نویسندگان [English]

  • Sadaf Noorani Niaki 1
  • Raheleh Ebrahimi 2
  • Orang Khademi 3
  • Foad Fatehi 4

1 M. Sc. Graduate, Department of Horticultural Science and Agronomy, Science and Research Branch, ‎Islamic Azad University, Tehran, Iran

2 Assistant Professor, Department of Horticultural Science and Agronomy, Science and Research Branch, Islamic Azad University, ‎Tehran, Iran

3 Associate Professor, Faculty of Agriculture, Shahed University, Tehran, Iran‎

4 Associate Professor, Department of Agriculture, Payame Noor University, Tehran, Iran

چکیده [English]

In order to investigate the effect of Hana extract and sodium nitroprusside on antioxidant properties and vase life of chrysanthemum, an experiment as factorial in a completely randomized design with three replications was conducted. The first factor was Hana leaf extract at three levels (0, 100 and 200 ppm), the second factor was sodium nitroprusside at three levels (0, 0.5 and 1 mM) and the third factor was sampling time at three levels (1, 6 and 12 day). The results showed that with increasing sampling time, flower diameter, chlorophyll content, relative water content and relative fresh weight decreased and the activity of antioxidant enzymes increased significantly. The extract of hana and sodium nitroprusside at high concentrations reduced the activity of antioxidant enzymes and improved chrysanthemum quality parameters, indicating their positive effects on the elimination of free radicals. The Hana extract treatment on sixth day of sampling time was the best treatment for improving the parameters of chrysanthemum flower. The Hana leaf extract and sodium nitroprusside treatments suppressed reduction of chlorophyll a, chlorophyll b and total chlorophyll leaf content. The results of this study showed that hana extract and sodium nitroprusside had positive effect on vase life of chrysanthemum cut flower.

کلیدواژه‌ها [English]

  • Antioxidant Enzymes
  • chlorophyll content
  • relative water content
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