ماندگاری و واکنش فیزیولوژیکی گل شاخه‌بریده لیلیوم اورینتال به عنصر شبه‌ضروری سیلیسیم در کشت بدون خاک

نوع مقاله: مقاله کامل

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، واحد مهاباد، دانشگاه آزاد اسلامی، مهاباد، ایران

2 دانشیار، دانشکده کشاورزی، واحد مهاباد، دانشگاه آزاد اسلامی، مهاباد، ایران

چکیده

این آزمایش با توجه به حذف خاک در کشت­های بدون خاک و در نتیجه حذف منبع اصلی تأمین عنصر شبه­ضروری سیلیسیم و همچنین عدم مطالعه تأثیر احتمالی این عنصر در پرورش لیلیوم شاخه­بریده، طراحی و اجرا گردید. در همین راستا و پس از انتقال پیازهای لیلیوم (Lilium oriental 'Casa Blanca') به بستر فیبر نارگیل (الیاف فرآوری­شده نارگیل)، گیاهان استقرار یافته با محلول غذایی حاوی غلظت­های مختلف اسید­سیلیسیک (صفر، 50، 100 و 150 میلی­گرم در لیتر سیلیسیم) محلول­دهی و ویژگی‌های فیزیولوژیکی و کیفیت پس از برداشت گل­های تولیدی در قالب طرح کاملاً تصادفی با 3 تکرار مورد بررسی قرار گرفت. نتایج آزمایش بیانگر افزایش معنی­دار آب جذب­شده توسط ساقه گل­دهنده، ماندگاری گل، کلروفیل کل، قند محلول، محتوای نسبی آب و کاهش معنی­دار نشت یونی برگ بود. بر همین اساس، بیشترین آب جذب­شده توسط ساقه گل­دهنده (6/0 میلی‌لیتر بر گرم وزن‌تر در روز)، عمر گلجایی (11/11 روز) و کلروفیل کل (97/0 میلی­گرم بر گرم وزن‌تر) در غلظت 150 میلی­گرم در لیتر سیلیسیم مشاهده گردید. همچنین جذب عناصر معدنی پتاسیم، کلسیم و سیلیسیم به­طور معنی­داری تحت تأثیر سیلیسیم قرار گرفتند. بیشترین غلظت کلسیم درغلظت 150 میلی­گرم در لیتر سیلیسیم مشاهده شد. براساس نتایج آزمایش، افزودن سیلیسیم به محلول غذایی منجر به بهبود روابط آبی گیاه، شاخص­های کیفی پس از برداشت، جذب عناصر معدنی و در نتیجه افزایش ماندگاری گل شاخه­بریده لیلیوم رقم کاسابلانکا گردید.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Vase life and physiological reaction of oriental lilium 'Casa Blanca' to silicon as a quasi-essential element under soilless cultivation system

نویسندگان [English]

  • Osman Mamrashpour 1
  • Mohammad Javad Nazarideljou 2
1 Former M. Sc. Student, Faculty of Agriculture, Mahabad Branch, Islamic Azad University, Mahabad, Iran
2 Associate Professor, Faculty of Agriculture, Mahabad Branch, Islamic Azad University, Mahabad, Iran
چکیده [English]

This experiment was conducted because of soil elimination as an important source of silicon (Si) (as a quasi-essential element) in soilless cultivation systems and also low information about Si effects on lilium cut flower. Accordingly, after transferring the Lilium longiflorum 'Casa Blanca' bulbs to pots containing coco-fiber media, plants were fed with a nutrient solution containing different silicic acid concentrations (0, 50, 100 and 150 mg/L Si). Physiological characteristics and postharvest quality of harvested flowers were evaluated based on a completely randomized design with 3 replications. Based on the results, compared with control, Si application significantly increased water uptake, flower longevity, total chlorophyll, solution uptake, relative water content and mineral uptake (K, Ca and Si) and reduced the ion leakage. Accordingly, the maximum water uptake (0.6 ml/g FW/day), vase life (11.11 days), total chlorophyll content (0.97 mg/g FW), leaf calcium (2.9 %) and silicon content (3.1 %) were observed in 150 ppm Si concentration. Based on results of the present study, addition of silicon to the lilium nutrient solution led to the improvement of plant water relations, postharvest quality indices, mineral absorption and, consequently, increasing the flower longevity of lilium 'Casa Blanca’cultivar.

کلیدواژه‌ها [English]

  • Cultivation method
  • cut flower
  • mineral element
  • Nutrient Solution
  • vase life
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