تأثیر نانوکلات روی بر صفات مورفوفیزیولوژیکی و فیتوشیمیایی گیاه دارویی زرین گیاه یا بادرنجبویه دنایی در شرایط تنش خشکی

نوع مقاله: مقاله کامل

نویسندگان

1 استادیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه بین‌المللی امام خمینی (ره)، قزوین، ایران

2 دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی و منابع طبیعی، دانشگاه بین‌المللی امام خمینی (ره)، قزوین، ایران

چکیده

به­منظور بررسی اثر محلول‌پاشی با نانو­کلات، بر روی مقاومت به تنش خشکی و همچنین صفات کمی و کیفی زرین گیاه یا بادرنجبویه دنایی تحت تنش خشکی، آزمایشی به­صورت فاکتوریل بر پایه طرح بلوک‌های کامل تصادفی، با 3 تکرار انجام شد. فاکتورهای آزمایشی شامل تنش خشکی در سه سطح (آبیاری در حد ظرفیت زراعی و آبیاری به­میزان 30 و 60 درصد ظرفیت زراعی) و محلول‌پاشی با نانو­کلات­روی در دو سطح (محلول­پاشی و عدم محلول­پاشی) بود. نتایج نشان دادند که با افزایش شدت تنش خشکی، ارتفاع بوته و وزن تر و خشک بوته به­صورت معنی‌داری کاهش پیدا کرد، و محلول­پاشی با روی، سبب افزایش این صفات گردید. کاربرد روی، توانسته میزان کلروفیل a را افزایش دهد و بیشترین مقدار کلروفیل کل (85/0 میلی‌گرم در گرم برگ تازه) از گیاهان رشدکرده در شرایط بدون تنش به­دست آمد. بیشترین درصد اسانس (53/1 درصد) نیز از گیاهان تحت تیمار تنش 60 درصد ظرفیت زراعی­+­ محلول­‌پاشی با روی استحصال گردید. چهار ترکیب اصلی اسانس؛ لیمونن، وربنون، نرال و سیترال بود که بیشترین مقدار لیمونن (72/30 درصد)، وربنون (72/33 درصد) و نرال (37/7 درصد) از گیاهان تحت تأثیر تنش 60 درصد ظرفیت مزرعه حاصل شد، مقدار سه ترکیب لیمونن، وربنون و نرال، در شرایط کاربرد روی، نسبت به حالت بدون محلول­پاشی با روی، افزایش معنی‌داری یافتند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of nano zinc chelate on morpho-physiological and phytochemical chracteristics of Dracocephalum kotschyi Bioss in drought stress condition

نویسندگان [English]

  • Sudabeh Mafakheri 1
  • Behvar Asghari 1
  • Mohammad Javad Nikjuyan 2
1 Assistant Professor, College of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran
2 Former M. Sc. Student, College of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran
چکیده [English]

For the investigation of effects of nano Zinc chelate foliar application on drought stress resistance of Dracocephalum kotschyi, and it's qualitative and quantitative characteristics, a field experiment, was conducted during 2016 growing season at research field of Imam Khomeini International University of Qazvin, Iran. The experiment was laid out in Factorial experiment based on randomized complete block design with 6 treatments and 3 replications. The experimental factors were; drought stress at three levels (100, 60 and 30% of field capacity) and nano zinc chelate at two levels (with and without foliar application). Results showed that with increasing of drought stress intensity, fresh and dry weight of plants as well as plant height were significantly decreased, but foliar application of zinc caused increasing in these traits. The maximum essential oil percentage (1.53%) was observed in plants treated with moderate drought stress and Zn foliar application. Zinc application could increase the amount of chlorophyll a, however the highest chlorophyll content (0.85 mg/gFW) was obtained by 100% FC irrigation. Main constituents of D.kotschyi essential oil are limonene, verbenone, neral and citral. The maximum percentage of limonene (30.72%), verbenone (33.72%) and neral (7.37%) were found in plants that treated with medium drought stress (60% FC). However the amounts of limonene, neral and verbenone were increased in presence of zinc foliar application.

کلیدواژه‌ها [English]

  • chlorophyll content
  • Dracocephalum kotschyi Bioss
  • Essential oil
  • Limonene
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