اثر محلول‌پاشی پتاسیم و نانوپتاسیم بر برخی خصوصیت‌های فیزیولوژیک و بیوشیمیایی لیلیوم رقم Tresor

نوع مقاله: علمی - پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد علوم باغبانی، گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

2 استادیار، گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

3 دانشیار، گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران

10.22055/ppd.2019.24505.1553

چکیده

چکیده
کودهای نانو با قابلیت رهاسازی مناسب و افزایش راندمان مصرف عناصر غذایی گامی مؤثر در جهت دستیابی به کشاورزی پایدار می‌باشند. در این تحقیق، اثر محلول‌پاشی برگی غلظت‌های مختلف پتاسیم (صفر، 1، 2 و 4 میلی‌مولار) و نانوپتاسیم (صفر، 5/0، 1 و 2 میلی‌مولار) در چهار مرحله قبل از برداشت بر صفات کمی و کیفی گل شاخه بریده لیلیومرقمTresorدر مهر‌ماه سال 1394 در دانشگاه اراک مورد بررسی قرار گرفت. صفات مورد اندازه‌گیری شامل تعداد غنچه، تعداد برگ، طول غنچه، قطر غنچه، طول ساقه، قطر ساقه، طول و عرض برگ، وزن تر و خشک ساقه و برگ، درصد ماده خشک ساقه و برگ، نشت یونی، شاخص کلروفیل، عمر گلجایی، طول و قطر دمگل، محتوای آنتوسیانین، فلاونوئید،کارتنوئید و کلروفیلa، bو کل بودند. بالاترین وزن تر ساقه در تیمار 5/0 میلی‌مولار نانوپتاسیم مشاهده شد، در‌حالی‌که، بیشترین تعداد غنچه، بالاترین پایداری سلول‌ها و کمترین نشت یونی در تیمار چهار میلی‌مولار پتاسیم به‌دست آمد. همچنین تیمار چهار میلی‌مولار پتاسیم و دو میلی‌مولار نانوپتاسیم نیز بیشترین عمر گلجایی را باعث شدند. در صفات محتوای کلروفیل a، b، کل، کاروتنوئید، آنتوسیانین و فلاونوئید اثر معنی‌داری مشاهده نشد.با توجه به نتایج به‌دست آمده به‌ویژه در صفات مهمی همچون عمر گلجایی، تیمار دو میلی‌مولار نانو پتاسیم به‌عنوان بهترین تیمار برای محلول‌پاشی جهت تغذیه پتاسیم توصیه می‌شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Effect of Potassium and Nano-Potassium on Some Physiological and Biochemical Traits of Asiatic Lilium Hybrid cv. Tresor

نویسندگان [English]

  • Fereshteh Abbasi 1
  • Alireza Khaleghi 2
  • Ali Khadivi 3
1 M.Sc. Student of Horticultural Sciences, Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
2 Assistant Professor, Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
3 Associate Professor, Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
چکیده [English]

Abstract
 
Background and Objectives
Lilium is one of the most important bulbous plants produced as cut flowers and pot plants. In order to increase the quality of flowers, all plants should be fertilized correctly. Potassium is one of the elements that play a very important role in the quality and performance of ornamental flowers. Nano fertilizers increase nutrient efficiency, reduce soil toxicity, minimize the potential negative effects associated with overdosage, and are an effective step toward achieving sustainable and environmentally sustainable agriculture. The present study was undertaken to investigate the effect of potassium and nano-potassium fertilizers on the physiological and biochemical characteristics of Asiatic Lilium Hybrid cv. Tresor.
 
Materials and Methods
In the current study, the effect of foliar spraying of different concentrations of potassium (0, 1, 2, and 4 mM) and nano-potassium (0, 0.5, 1, and 2 mM) was investigated on qualitative and quantitative traits of lily cut flower "Tresor" at the four stages of pre-harvest. The traits included a number of buds and leaves, bud length, bud diameter, stem length, stem diameter, length and width of leaves, fresh and dry weight of stems and leaves, flower longevity, peduncle length and diameter, dry matter percent of stems and leaves, ionic leakage, chlorophyll index and content of carotenoids, Flavonoids, anthocyanins, and chlorophyll a, b, and total.
 
Results
The result showed that there are significant differences between different spraying treatments and the number of buds, stems fresh weight, and ionic leakage. The highest stem fresh weight was observed by the 0.5mM nano-potassium, while the largest number of buds, the highest cells stability, and the lowest ionic leakage were achieved by the 4mM potassium. In regard to the traits of chlorophyll content, Carotenoid, Anthocyanin, and Flavonoid, there were no significant differences between the treatments of potassium and the nano-potassium. Also, the 4mM potassium and the 2mM nano-potassium showed the longest vase life. Considering the fact that the number of buds in the Lily is the most important trait, the 2 mM nano-potassium is recommended as the best treatment for spraying to feeding potassium.
Discussion
The foliar application of potassium and nano-potassium enhanced stem fresh weight and vase life of cut flower lilies and reduced ionic leakage compared to the control. Also, the largest number of buds was achieved by the 4 mM potassium. These results are in agreement with previous studies on carnation, Narcissus, and lily. Potassium is vital to many plant processes. Potassium plays a major role in the transport of water and nutrients throughout the plant in the xylem. Potassium is required for every major step of protein synthesis. Also, the enzyme responsible for the synthesis of starch (starch synthetase), which is activated by K. Briefly potassium, plays significant roles in enhancing the crop quality. High levels of available K improve the physical quality, disease resistance, and shelf life of crops.

کلیدواژه‌ها [English]

  • Postharvest
  • Quality
  • Quantity

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