Evaluation of the Effect of Different Potassium Concentrations in Nutrient Solution on Growth and Postharvest Life of Lily Flowers (Lilium spp.) in Hydroponic Cultivation
محورهای موضوعی : مجله گیاهان زینتیAli Sahari Moghadam 1 , Shirin Seyed Nasir 2
1 - Department of Horticulture, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Soil Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
کلید واژه: Nutrition, postharvest, deficiency,
چکیده مقاله :
Lilium is scientifically named Lilium longiflorum is a cut bulbous flower. In the process of producing lilium flowers, the quality of the flowers has a special importance and one of the most important factors is proper nutrition. Balanced and optimal nutrition is easily possible in hydroponic systems. In contrast, improper management of the nutrient solution significantly reduces plant growth and impairs the quantitative and qualitative production of the product. Nutrients often interact and the diagnosis of deficiency or toxicity of the nutrients is made by experimental studies under controlled conditions. In order to study the effect of different concentrations of potassium on lily growth and postharvest life, a hydroponic experiment based on a randomized complete design with different concentrations of potassium at three levels of 0, 3 and 6 mM in three replicates in planting bed of 40% perlite + 60% sand was performed. The results showed that most of the plant growth indices, especially shoot dry weight, decreased with potassium consumption in nutrient solution, but at a concentration of 6 mM potassium in nutrient solution, postharvest life increased significantly compared to the control.
لیلیوم با نام علمی Lilium longiflorum یک گل پیازدار شاخه بریده است. در فرآیند تولید گل لیلیوم، کیفیت گل اهمیت ویژهای دارد که یکی از مهمترین عوامل موثر بر آن، تغذیه صحیح میباشد. تغذیه متعادل و مطلوب در سیستمهای هیدروپونیک به راحتی امکانپذیراست. درمقابل، مدیریت نادرست محلول غذایی سبب کاهش چشمگیر رشد و نمو گیاهان و اختلال در تولید کمی و کیفی محصول میشود. عناصر غذایی اغلب اثر متقابل داشته و تشخیص کمبود و یا سمیت عنصر و یا عناصر غذایی با مطالعات آزمایشی در شرایط کنترلشده انجام میگیرد. بهمنظور مطالعه تأثیر غلظتهای مختلف پتاسیم بر رشد سوسن و عمر پس از برداشت آن، یک آزمایش هیدروپونیک در قالب طرح کاملاً تصادفی با غلظتهای مختلف پتاسیم در سه سطح 0، 3 و 6 میلیمولار در سه تکرار در بستر کاشت ثابت پرلیت 40% + ماسه 60% اجرا گردید. نتایج نشان داد که اغلب شاخصهای رشد گیاه به ویژه وزن خشک اندام هوایی با مصرف پتاسیم در محلول غذایی کاهش یافت، اما در غلظت 6 میلیمول پتاسیم در محلول غذایی، عمر پس از برداشت گل افزایش معنیدار نسبت به شاهد داشت.
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