اثر محلول پاشی پرولین برکاهش اثرات ناشی از تنش کم آبی در بابونه آلمانی

بوم شناسی گیاهان زراعی

مقاله 4، دوره 14، شماره 1 - شماره پیاپی 51، خرداد 1397، صفحه 33-43   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22034/aej.2018.541280

نویسندگان

حکیمه درویژه^* ؛ محسن زواره

گروه زراعت و اصلاح نباتات، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

چکیده

راه­ کار­های مختلفی برای کاهش آسیب ­های ایجاد شده طی تنش کم ­آبی و بهبود تحمل گیاه به آن وجود دارد. در این پژوهش تأثیر محلول‌پاشی پرولین بر کاهش اثرات تنش کم‌آبی و بهبود شاخص‌های کمی و کیفی بابونه آلمانی بررسی شد. آزمایش به ­صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار در دانشگاه گیلان انجام و تیمارهای آزمایش شامل پرولین با غلظت­های 0، 50 و 100 میلی­ گرم بر لیتر و کم ­آبی در چهار سطح 0، 25، 50 و 75 درصد تخلیه از حد ظرفیت زراعی در مرحله ساقه­ روی بود. در اثر ­کم ­آّبی غلظت پرولین و کاتالاز افزایش، ولی صفات مورفولوژیک کاهش یافت. کاربرد پرولین در شرایط کم­ آّبی بر همه ویژگی­ های اندازه ­گیری شده تأثیر معنی ­دار داشت. براساس نتایج این آزمایش محلول­ پاشی گیاه با غلظت 100 میلی ­گرم بر لیتر پرولین موجب بهبود رشد و تعدیل وضعیت گیاه در برابر کم­آبی شد و از این رو استفاده از غلظت فوق برای دستیابی به عملکرد مطلوب در بابونه در شرایط کم­آبی توصیه می ­شود.

کلیدواژه‌ها

 آنزیم آنتی اکسیدانی؛  پتانسیل آب؛  تنش خشکی؛  تنظیم اسمزی؛  تنظیم کننده رشد گیاهی

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