تأثیر محلول‌پاشی متانول بر ویژگی‌های کمی و تنظیم‌کننده‌های اسمزی بادرشبو (Dracocephlum moldavica L.) در شرایط کم آبیاری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، دانشکدۀ کشاورزی، دانشگاه زابل

2 دانشجوی کارشناسی ارشد رشتۀ گیاهان دارویی، دانشکدۀ کشاورزی، دانشگاه زابل

3 استاد، دانشکدۀ کشاورزی، دانشگاه زابل

چکیده

به‌منظور بررسی تأثیر محلول‌پاشی متانول بر ویژگی‌های کمی و تنظیم‌کننده‌های اسمزی بادرشبو در شرایط کم آبیاری، آزمایشی به‌صورت کرت‌های خردشده در قالب بلوک‌های کامل تصادفی با سه تکرار در کشتزار تحقیقاتی دانشکدۀ کشاورزی دانشگاه زابل در سال زراعی 92-91 اجرا شد. تیمارهای کم‌ آبیاری شامل: 100 (شاهد یا بدون تنش)، 80  و 60 درصد رطوبت ظرفیت زراعی به‌عنوان عامل اصلی و محلول‌پاشی متانول در چهار سطح شامل: بدون محلول‌پاشی (شاهد)، محلول‌پاشی با 15، 30 و 45 درصد حجمی متانول به‌عنوان عامل فرعی بود. نتایج نشان داد که تأثیر تنش کم‌آبی بر ارتفاع بوته، شمار شاخه‌های فرعی، وزن خشک اندام‌های هوایی، درصد اسانس، محتوای پرولین، سبزینه (کلروفیل)، کاروتنوئید، پتاسیم و سدیم معنی‌دار بود. با افزایش تنش خشکی محتوای پرولین و درصد اسانس افزایش، ولی ارتفاع بوته، شمار شاخه‌های فرعی، وزن خشک اندام‌های هوایی، سبزینه، کاروتنوئید، پتاسیم و سدیم کاهش یافت. محلول‌پاشی متانول بر ارتفاع بوته، شمار شاخه‌های فرعی، وزن خشک اندام‌های هوایی، درصد اسانس، محتوای پرولین و سبزینه، کاروتنوئید، پتاسیم و سدیم تأثیر معنی‌داری داشت. محلول‌پاشی متانول با 30 درصد حجمی بیشترین تأثیر را بر ارتفاع بوته، شمار شاخه‌های فرعی، وزن خشک اندام‌های هوایی، درصد اسانس، محتوای پرولین، سبزینه، کاروتنوئید، پتاسیم و سدیم داشت، به‌طوری‌که موجب افزایش 73/59 درصد مادۀ خشک نسبت به محلول‌پاشی 45 درصد حجمی شد. بر پایۀ نتایج این آزمایش محلول‌پاشی 30 درصد حجمی متانول و تأمین رطوبت در حد ظرفیت زراعی برای تولید بادرشبو مناسب بود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of methanol spraying on quantitative traits and osmatic adjustments in Moldavian (Dracocephlum moldavica L.) under low irrigation conditions

نویسندگان [English]

  • Mahmood Ramroudi 1
  • Mojtaba Chezgi 2
  • Mohammd Galavi 3
1 Associated Professor, Faculty of Agriculture, University of Zabol, Iran
2 M.Sc. Student of Medicinal Plant, Faculty of Agriculture, University of Zabol, Iran
3 Professor, Faculty of Agriculture, University of Zabol, Iran
چکیده [English]

In order to evaluate effects of methanol spraying on quantitative traits and osmatic adjustments in Dracocephlum moldavica L. under low irrigation conditions, an experiment was conducted as split plots based on randomized complete block design with three replications at the research farm, Faculty of Agriculture, Zabol University, Iran in 2013. Treatments included three levels of water low stress include: 100 (control), 80 and 60 percentage of field capacity as main plots, and four levels including 0 (control), 15, 30 and 45 volumetric percentage of methanol spraying as sub plots. The results showed that the plant height, number of lateral branch, dry matter, oil percentage, chlorophyll, carotenoid, proline contents, potassium and sodium was significantly affected by drought stress. With increasing of drought stress, proline content and oil percentage increased, but plant height, number of lateral branch, dry matter, chlorophyll, carotenoid, potassium and sodium were decreased. Methanol foliar application on plant height, number of lateral branch, dry matter, oil percentage, chlorophyll, carotenoid, proline contents, potassium and sodium had a significant effect. The maximum amounts of plant height, number of lateral branch, dry matter, oil percentage oil, chlorophyll, carotenoid, proline contents, potassium and sodium obtained by 30 volumetric percentage of methanol spraying, and the dry matter was 59.73 percentages more than by 45 volumetric percentage of methanol spraying. Based on the results of methanol spraying 30 percentages and provide water at field capacity for production Moldavian is suitable.

کلیدواژه‌ها [English]

  • carotenoid
  • Essential oil
  • Leaf chlorophyll
  • pigments
  • proline

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سابقه مقاله

  • تاریخ دریافت: 13 آبان 1394
  • تاریخ بازنگری: 15 اسفند 1394
  • تاریخ پذیرش: 21 فروردین 1395
  • تاریخ انتشار: 01 خرداد 1396

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