مقایسۀ کاربرد پیش و پس از برداشت اسید سالیسیلیک در روند پیری گل لیلیوم عید پاک رقم tresor

نوع مقاله : مقاله پژوهشی

نویسنده

دانشیار گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه مراغه، ص.پ. 553-55136، مراغه، ایران

چکیده

ازآنجایی‌که کیفیت و طول عمر گل­های شاخه‌بریده به میزان زیادی تحت تأثیر عامل‌های پیش و پس از برداشت قرار می­گیرد، لذا تلاش­های بسیاری برای افزایش کیفیت و عمر ماندگاری آن‌ها با استفاده از روش­ها و ترکیب‌های مختلف صورت گرفته است. در این پژوهش، آزمایشی در قالب فاکتوریل بر پایۀ طرح کامل تصادفی برای بررسی تأثیر اسید سالیسیلیک در مرحلۀ پیش و پس از برداشت با سه تکرار بر عمر ماندگاری لیلیوم انجام شد. غلظت­های 0، 50، 100 و 200 میکرومولار اسید سالیسیلیک روی بوته­های گل محلول­پاشی شد و پس از برداشت، گل­های شاخه‌بریده در محلول­هایی با همان غلظت­ها قرار گرفتند. نتایج، نشان‌دهندۀ تأثیر مثبت اسید سالیسیلیک بر افزایش شمار غنچه و نیز تأخیر در کاهش فعالیت آنزیم­های پاداکسنده (آنتی‌اکسیدان) بود و روند کاهش نسبت به شاهد با سرعت کمتری به‌پیش رفت. تیمار اسید سالیسیلیک تأثیر معنی­داری در میزان پروتئین­های کل در پنج مرحلۀ رشد و نموی نداشت و میزان پراکسید هیدروژن نیز در گلبرگ­ها یک‌روند افزایشی همراه با یک آهنگ ثابت داشت که نسبت به شاهد کمتر بود. کاربرد پیش و پس از برداشت اسید سالیسیلیک در غلظت­های 50 و 100 میکرومولار با افزایش ظرفیت پاداکسندگی یاخته­ها و همچنین به‌وسیلۀ تنظیم توازن آب در گیاه، سبب افزایش عمر ماندگاری گل­های شاخه‌بریدۀ لیلیوم نسبت به شاهد شد. با توجه به گسترش استفاده از ترکیب‌های شیمیایی زیانبار در محلول نگهداری گل­های شاخه‌بریده، ترکیب مورد بررسی قابلیت زیادی برای استفاده در گلخانه­های پرورش و تولید سوسن عید پاک، گل‌فروشی‌ها و خانه دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Comparison between pre and post application of Salicylic acid in senescence trend of Easter lily cv. tresor

نویسنده [English]

  • Hanifeh Seyed Hajizadeh
Associate Professor, Departement of Horticultural scences, Faculty of Agriculture, University of Maragheh , P. O. Box 55136-553, Maragheh, Iran
چکیده [English]

Since the quality and vase life of cut flowers is seriously related to the pre and postharvest factors, so a lot of efforts have been done for increasing quality and longevity of them using different methods and compounds. In the present project, the factorial experiment was done based on Completely Randomized Design to study the effect of pre and post-harvest salicylic acid application on storability of Lilium. Solutions with 0, 50, 100 and 200 μM concentrations of salicylic acid were sprayed on flowers and their cut flowers were placed in the same solutions after harvest. Results showed the positive effects of 50 and 100 μM concentrations of pre and postharvest application of salicylic acid on the increase of bud number and delay in antioxidant enzyme activity reduction and also its trend was slow compared to control. Salicylic acid treatment had no significant effect on total protein in 5 developmental stage of flower and the level of hydrogen peroxide had an increasing trend, but to a lesser extent than controls. Pre and post application of salicylic acid with increasing in cell antioxidant capacity and also water balance regulation in plant, caused to extend in vase life of Lilium cut flowers in comparison with control. Due to spread of harmful chemical compounds in preservative solutions, the mentioned composition had more potential for applying in Easter lily greenhouses, flower retailers and home.

کلیدواژه‌ها [English]

  • antioxidant capacity
  • cell membrane stability
  • Lilium longiflorum
  • vase life and flower development
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