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تأثیر محرک‌های زیستی بر برخی از ویژگی‌های مورفولوژیک و فیتوشیمیایی گیاه دارویی Dracocephalum moldavica L. تحت تنش کم‌آبیاری | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| مقاله 11، دوره 37، شماره 6 - شماره پیاپی 110، بهمن و اسفند 1400، صفحه 1022-1039 اصل مقاله (1.09 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijmapr.2021.354343.2989 | ||
| نویسندگان | ||
| ثریا مددخانی1؛ عزیزاله خیری* 2؛ مسعود ارغوانی2؛ محسن ثانی خانی2؛ زینب محکمی3 | ||
| 1دانشجوی کارشناسی ارشد علوم باغبانی، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
| 2استادیار، علوم باغبانی، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
| 3مربی، پژوهشکده کشاورزی، دانشگاه زابل، زابل، ایران | ||
| چکیده | ||
| کاربرد محرک‌های زیستی در راستای تولید فرآورده‌های بیولوژیک سازگار با محیط‌زیست و در پیوند با کشاورزی نوین می‌تواند سبب افزایش رشد کمّی و کیفی گیاهان و کاهش اثر تنش‌های محیطی بر آنها شود. به‌منظور بررسی اثر محرک‌های زیستی تحت تنش کم‌آبیاری بر ویژگی‌های مورفولوژیک و فیتوشیمیایی بادرشبو (Dracocephalum moldavica L.) این آزمایش در سال زراعی 98 به صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی در مزرعه تحقیقاتی دانشگاه زنجان در سه تکرار اجرا شد. فاکتور اصلی آزمایش آبیاری (100% و 70% ظرفیت زراعی) و فاکتور فرعی محلول‌پاشی محرک‌های عصاره زعفران (0.01% و 0.05%)، عصاره جینسینگ (0.5% و 1%)، آمینو اسید ال- سیستئین (50 و100 میکرومولار) و تیمار شاهد (عدم محلول‌پاشی) در مراحل 4، 8 و 12 برگی بود. ویژگی‌های مورفولوژیک و فیتوشیمیایی در مرحله 90% گلدهی گیاهان ارزیابی شدند. در این آزمایش در شرایط آبیاری کامل، بالاترین میزان کلروفیل کل (mg/g FW 35.68)، کاروتنوئید (mg/g FW 9.18) و محتوای نسبی آب برگ (83.20%) از تحریک توسط ال- سیستئین با غلظت 50 میکرومولار حاصل شد. در حالی‌که تحت شرایط تنش آبی بالاترین محتوای فنل کل (mg GA/g DW 33.17)، فلاونوئید کل (mg QE/g DW 1.53) و ظرفیت آنتی‌اکسیدانی (95.37%) از تیمار عدم محلول‌پاشی محرک‌های زیستی حاصل شد. بالاترین درصد اسانس (0.38%) مربوط به تیمار 100 میکرومولار ال- سیستئین در شرایط آبیاری کامل بود. اگرچه پارامترهای مورفولوژیکی بادرشبو تحت شرایط آبیاری کامل بیشترین مقدار خود را داشتند اما اعمال تنش کم‌آبیاری منجر به سنتز مقادیر بالاتری از ترکیب‌های فنولی، فلاونوئیدی و بروز خاصیت آنتی‌اکسیدانی قوی‌تر گردید. | ||
| کلیدواژه‌ها | ||
| آمینواسید؛ اسانس؛ محلول‌پاشی؛ تنش خشکی؛ عصاره جینسینگ؛ عصاره زعفران | ||
| عنوان مقاله [English] | ||
| Effects of elicitors on some morphological and phytochemical traits of Dracocephalum moldavica L. under low irrigation stress | ||
| نویسندگان [English] | ||
| S. Madadkhani1؛ A. Kheiry2؛ M. Arghavani2؛ M. Sanikhani2؛ Z. Mohkami3 | ||
| 1M.Sc. of Horticulture, Faculty of Agriculture, University of Zanjan, Zanjan, Iran | ||
| 2Department of Horticulture, Faculty of Agriculture, University of Zanjan, Zanjan, Iran | ||
| 3Institute of Agricultural Research, University of Zabol, Zabol, Iran | ||
| چکیده [English] | ||
| The use of elicitors to produce the environmentally friendly biological products and in conjunction with the modern agriculture can increase the qualitative and quantitative growth of plants and reduce the effects of environmental stresses on them. To investigate the effects of biostimulants under the low irrigation stress on the morphological and phytochemical characteristics of Dracocephalum moldavica L., a factorial experiment was conducted in a completely randomized block design in the Zanjan University research farm in three replications in 2019. The main factor was the irrigation (100 and 70% of field capacity) and the sub-factor was the foliar application of elicitors including saffron extract (0.01 and 0.05%), ginseng extract (0.5 and 1%), amino acid L-cysteine (50 and 100 μM), and control treatment (no foliar application) at the four-, eight-, and twelve-leaf stages. The morphological and phytochemical traits were evaluated at the 90% flowering stage of the plants. In the present experiment, the highest amount of total chlorophyll (35.68 mg / g FW), carotenoids (9.18 mg / g FW), and relative leaf water content (83.20%) was obtained under the full irrigation conditions stimulated by the 50 μM L-cysteine treatment. While under the water stress conditions, the highest content of total phenols (33.17 mg GA / g DW), total flavonoids (1.53 mg QE / g DW), and antioxidant capacity (95.37%) was obtained in the no foliar application of elicitors treatment. The highest essential oil percentage (0.38%) was observed in the 100 μM L-cysteine treatment under the full irrigation conditions. Although the morphological parameters of D. moldavica had their highest values under the full irrigation conditions, the low irrigation stress led to the synthesis of higher amounts of phenolics and flavonoids and the stronger antioxidant capacity. | ||
| کلیدواژه‌ها [English] | ||
| Amino acid, essential oil, foliar application, low irrigation stress, ginseng extract, saffron extract | ||
| مراجع | ||
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