تأثیر طیف‌های مختلف نور ‏LED‏ بر صفات مورفوفیزیولوژیک سه گونه نعناع ‏

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده کشاورزی دانشگاه شهرکرد، شهرکرد، ایران

2 استادیار، دانشکده کشاورزی دانشگاه شهرکرد، شهرکرد، ایران

3 دانشیار، دانشکده کشاورزی دانشگاه صنعتی اصفهان، اصفهان، ایران

4 استاد، دانشکده کشاورزی دانشگاه شهرکرد، شهرکرد، ایران

چکیده

گیاهان دارویی همواره منابعی با ارزش اقتصادی بشمار می­آیند. خانواده نعناعیان دربرگیرنده جنس­های متنوعی از گیاهان دارویی است که به­دلیل بازارپسندی بالا، به صورت تجاری پرورش داده می‌شوند. با توجه به اهمیت اقتصادی و دارویی بالای گیاهان این خانواده، تولید کنندگان، همواره در پی بکارگیری شیوه­های نوین برای افزایش تولید در نعناعیان هستند. استفاده از نورهای مصنوعی LED از جمله راهکارهای نوین در افزایش تولید محصولات باغی و دارویی است. بر همین اساس، تحقیق حاضر با هدف شناخت چگونگی تأثیر نور بر عملکرد سه گونه­ی نعناع معمولی، نعناع فلفلی و پونه به­اجرا درآمد. در این پژوهش، گونه­های گیاهی تحت شش محیط نوری: قرمز، آبی، ترکیب قرمز و آبی، سفید، ساطع‌شده از لامپ­های LED و نیز نور لامپ فلورسنت و محیط گلخانه بعنوان شاهد پرورش داده­ شدند. آزمایش در هر محیط، بصورت طرح کاملاً تصادفی با سه تکرار در دو سال انجام شد. نتایج نشان­دهنده تأثیر معنی‌دار محیط­های نوری بر صفات مورفوفیزیولوژیک مختلف بررسی­شده در تحقیق بود. محیط­های نوری قرمز، قرمز-آبی همراه با گلخانه دارای بیشترین عملکرد تر و خشک، و محیط نوری مجهز به نور سفید از کمترین میزان صفات مذکور برخوردار بود. نتایج مقایسه میانگین­ها نشان دادگونه­های نعناع فلفلی و پونه نسبت به نعناع معمولی از نظر کلیه صفات مورد مطالعه، برتر بودند. مقایسه میانگین اثر متقابل گونه و محیط نیز بیانگر برتری رشد نعناع فلفلی و نعناع معمولی در محیط نوری گلخانه و نور قرمز-آبی نسبت به سایر محیط­های نوری بود. در مجموع نتایج نشان داد نورهای قرمز و ترکیب قرمز و آبی بهترین انتخاب برای تولید سه گونه نعناع در شرایط کشت طبقاتی با استفاده از نور LED می‌باشند.
 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of light emitting diodes irradiation on morpho-physiological traits ‎of three ‎Mentha Spp.‎

نویسندگان [English]

  • Mostafa Khazaei 1
  • Fariba Rafiei 2
  • Mohammad Reza Sabzalian 3
  • Saadollah Houshmand 4
1 Ph. D. Candidate,, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran
2 Assitant Professor, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran ‎
3 Associate Professor, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
4 Professor, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran ‎
چکیده [English]

Medicinal plants have long been recognized as valuable sources economically and pharmacologically. The family of Lamiaceae comprises a wide range of plants, which are commercially cultivated for their medical usage. Due to high marketability, producers continually investigate to maximize yield and productivity of these plants. Photoregulation is an effective strategy to improve productivity of plants. In the present work, we have studied the effect of different LED light treatments on morpho-physiological response of three different mint species including mint, peppermint and pennyroyal plants. The light treatments included red LED, blue LED, combined red and blue LEDs, and white emitted from fluorescent or LED lights in different growth chambers. A greenhouse environment was also considered and served as the control. The experiment was conducted in a completely randomized design with three replicates in two consecutive years. The results indicated a significant difference among the light treatments regarding all morpho-physiological traits. Red and red-blue LED as well as greenhouse led to maximal fresh and dry biomass (yield), whereas white LED caused the least performance. Mean comparisons showed that that peppermint and pennyroyal were superior as compared to mint, for all studied traits. Mean comparison interaction effect of species and environment showed that peppermint and mint had the greatest fresh biomass under greenhouse and red-blue LED. In conclusion, red LED and combined red and blue LED were the best choice for production in three mint species using LEDs in vertical farming systems.  

کلیدواژه‌ها [English]

  • Artificial light
  • fresh and dry weights of shoot
  • Pennyroyal
  • Lamiaceae
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