اثر دور آبیاری و محلول‌پاشی تیتانیوم به دو فرم نانو و غیر نانو بر خصوصیات رشدی و عملکردی گل ‏محمدی (‏Rosa × damascena Mill.‎‏)‏

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران

2 دانش آموخته دکتری، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران

چکیده

خشکی از عوامل مهم محدودکننده تولیدات باغی است و این موضوع در مناطق خشک و نیمه‌خشک از اهمیت بیشتری برخوردار است. با توجه به اهمیت نانوتکنولوژی در بهبود روش‌های موجود در گیاهان باغی این آزمایش روی گل محمدی (Rosa× damascena Mill) به صورت فاکتوریل بر پایه طرح کاملاً تصادفی و درسه تکرار در دانشکده کشاورزی دانشگاه فردوسی مشهد در بهار و تابستان 1397 اجرا شد. تیمار‌های آزمایش شامل دو رژیم آبیاری ( هر سه روز (شاهد)، و شش روز) و پنج سطح تیتانیوم (0 (شاهد، عدم استفاده از تیتانیوم)، 15 پی‌پی‌ام دی‌اکسید‌تیتانیوم، 30 پی‌پی‌ام دی‌اکسید‌تیتانیوم، 15 پی‌پی‌ام نانو دی‌اکسید‌تیتانیوم، 30 پی‌پی‌ام نانو دی‌اکسید‌تیتانیوم) بود. نتایج نشان اگرچه افزایش دور آبیاری منجر به کاهش سطح برگ و قطر گل شد، تیتانیوم در تمام سطوح استفاده شده روی صفات وابسته به درشتی گل مثل قطر گل، قطر دمگل و طول دمگل اثر داشت. به طوریکه تعداد گل با کاربرد 15 و 30 پی‌پی‌ام دی اکسید تیتانیوم 8/40 و 9/54 درصد و با کاربرد 15 و 30 پی‌پی‌ام نانو دی‌اکسید‌تیتانیوم 84 و 69 درصد افزایش یافت. در تیمار 30 پی‌پی‌ام نانو دی‌اکسید‌تیتانیوم و دور آبیاری 3 روز یکبار مقدار پرولین ۲۰/0 میکرومول بر گرم و در همین تیمار تیتانیوم و دور آبیاری 6 روز یکبار برابر ۵۰/0 میکرومول بر گرم بود. به طور کلی کاربرد دی‌اکسید‌تیتانیوم و نانو دی‌اکسید‌تیتانیوم منجر به بهبود صفات رشدی و قطر گل شد. همچنین در بین سطوح استفاده شده غلظت 15 پی‌پی‌ام نانو دی‌اکسید‌تیتانیوم تأثیر بیشتری بر قطر گل، تعداد گل، محتوای آب نسبی و شاخص سبزینگی برگ داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of irrigation cycle and foliar application of titanium in both forms of nanosized ‎and bulk on growth traits and yield of Rosa × damascena Mill‏.‏‎ ‎

نویسندگان [English]

  • Yahya Selahvarzi 1
  • Maryam Kamali 2
1 Assistant Professor, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran‎
2 Ph.D. Graduated, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
چکیده [English]

Drought is one of the major factors limiting horticultural products and this is more important in arid and semi-arid regions. Due to the importance of nanotechnology in improving the methods available in horticulture, this experiment was performed on Rosa × damascena Mill as factorial experiment based on the completely randomized design with three replications at Faculty of Agriculture, Ferdowsi University of Mashhad, in the growing season of 2018. The treatments consisted of 2 irrigation regimes (3 days and 6 days) and 5 levels of titanium (0 (control), 15 and 30 ppm titanium dioxide, 15 and 30 ppm nano-titanium dioxide). The results showed that with increasing the irrigation interval, decreased leaf area and flower diameter. Titanium was affected on flower diameter, peduncle diameter and length of peduncle at all levels. Number of flowers increased by 15 and 30 ppm titanium dioxide 40.8 and 54.9%, respectively, and with 15 and 30 ppm nano-titanium dioxide 84 and 69%. In treatment of 30 ppm nano-titanium dioxide and irrigation interval 3 days, the amount of proline was 0.20 and in the same treatment of titanium and irrigation interval 6 days, was equal to 0.50 µmol/g. In general, the use of titanium dioxide and nano titanium dioxide resulted in improved growth traits and flower diameter. Also, among the used levels, 15 ppm nano-titanium dioxide had a greater effect on flower diameter, flower number, relative water content, and spade.

کلیدواژه‌ها [English]

  • Drought
  • number of flowers
  • proline
  • relative water content
  • spad‎
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