بررسی اثر سیستم کشت، رقم و محلول‌های غذایی مختلف بر برخی از پارامترهای رویشی و فیزیولوژیکی گیاه سیب ‏زمینی

نوع مقاله: مقاله کامل

نویسندگان

1 دانشیار، گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه ولی عصر (عج) رفسنجان

2 دانشجوی سابق کارشناسی ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه ولی عصر (عج) رفسنجان

چکیده

هواکشت، فناوری جدیدی برای تولید ریزغدة‌ سیب‌زمینی محسوب می‌شود. به منظور شناسایی محلول غذایی و رقم سیب‌ز‌مینی مناسب برای تولید ریزغده در سیستم هواکشت و مقایسة آن با سیستم هیدروپونیک کلاسیک، آزمایشی به‌صورت فاکتوریل با سه فاکتور سیستم کشت (هیدروپونیک کلاسیک و هواکشت)، محلول غذایی (محلول چنگ و همکاران، APCoAB و محلول هیدروپونیک تجاری اصفهان)، و سه رقم سیب‏زمینی (مارفونا، سانتانا و مورن) انجام شد. صفات تعداد برگ، سطح برگ، طول استولون، وزن خشک ساقه و ریشه، محتوای رنگدانه‌های فتوسنتزی، حداکثر عملکرد کوانتومی فتوسیستم 2 (Fv/Fm)، شاخص کارایی فتوسنتزی (PI)، ارزیابی شدند. نتایج نشان داد که گیاهان سیستم هواکشت بدون ارتباط به نوع رقم و محلول غذایی در مقایسه با گیاهان سیستم هیدروپونیک کلاسیک افزایش درخور توجهی در پارامترهای رویشی و فیزیولوژیکی نشان دادند که احتمالاً به دلیل دسترسی بهتر به عناصر غذایی و هوادهی کامل ریشه‌ها بود. به‌طوری‏که وزن خشک ریشه و بخش‏های هوایی گیاه و محتوای رنگدانه‌های فتوسنتزی در سیستم هواکشت بالاتر از سیستم هیدروپونیک کلاسیک بود. همچنین، گیاهان تغذیه‌شده با محلول تجاری هیدروپونیک اصفهان در مقایسه با محلول چنگ و همکاران و محلول APCoAB رشد رویشی بیشتری داشتند، که به دلیل بالا بودن نیتروژن در این محلول غذایی بود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of the effect of culture system, cultivar and different nutrient solutions on some growth and physiological parameters of potato plant

نویسندگان [English]

  • Hamid Reza Roosta 1
  • Majid Rashidi 2
1 Associate Professor, Faculty of Agriculture, Department of Horticultural Sciences, Vali-E-Asr University of Rafsanjan, Rafsanjan, Iran
2 Former M.Sc. Student, Faculty of Agriculture, Department of Horticultural Sciences, Vali-E-Asr University of Rafsanjan, Rafsanjan, Iran
چکیده [English]

Aeroponic is a new technology for potato minituber production. In order to recognition of the suitable nutrient solution and potato variety for minituber production in aeroponics in comparison with classic hydroponics, a factorial experiment was carried out with three factors of culture systems (aeroponics and hydroponics), nutrient solutions (Chang et al., 2008; APCoAB and commercial nutrient solution of Esfahan), and three cultivars of potato (Marfana, Santana and Morn). Leaf number, leaf area, stolon length, shoot and roots dry mass, photosynthetical pigments content, photochemical quantum yield of PS II photochemistry (Fv/Fm), photosynthetical performance index (PI) were investigated. Results showed that plants growing in aeroponics exhibited a considerable increase in growth and physiological parameters regardless of cultivar and nutrient solution, compared to classic hydroponic system. It might be due to the better nutrient availability and aeration of roots in this system. Also, root and shoot dry mass of plants and photosynthetic pigment contents were higher in aeroponic than classic hydroponic grown plants. In addition, plants nourished with Esfahan economical nutrient solution had higher vegetative growth compared to Chang et al. (2008) and APCoAB nutrient solution, which was due to the higher N in this solution.

کلیدواژه‌ها [English]

  • aeroponic
  • minituber
  • Soilless culture
  • tuber seed
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