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بررسی میزان و سرعت جوانهزنی بذر دوازده گیاه دارویی تحت تنش شوری | ||
علوم و تحقیقات بذر ایران | ||
مقاله 3، دوره 2، شماره 1، فروردین 1394، صفحه 27-36 اصل مقاله (996.95 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسنده | ||
مهراب یادگاری | ||
دانشکده کشاورزی دانشگاه آزاد اسلامی واحد شهرکرد | ||
چکیده | ||
بهمنظور بررسی تحمل شوری بذر دوازده گیاه دارویی به نامهای بالنگو ، بارهنگ ، شوید، زیره سبز، شبدر گلزرد، زنیان، مرزنگوش، کاهو، کنجد، شنبلیله، قدومه و خرفه در مرحله جوانهزنی، آزمایشی در قالب طرح کاملاً تصادفی تحت فاکتور تنش شوری با چهار تکرار در سال 1391 در شرایط آزمایشگاه، انجام گردید. برای ایجاد سطوح شوری )0، 25، 50، 75، 100، 150، 200، 250، 300، 350، 400 و 450 دسیزیمنس بر متر) از کلرید سدیم خالص و آب مقطر استفاده شد. اندازهگیری درصد و سرعت جوانهزنی در پتریدیش انجام شد. اعمال تیمارها بسته به نوع گیاه، تا حد 450 دسیزیمنس بر متر نمک طعام به پیش رفت و در این حد، میزان جوانهزنی به صفر رسید. تیمارهای به کار رفته با توجه به توان جوانهزنی برای بارهنگ، بالنگو و شوید (تا 100 دسیزیمنس بر متر) ؛ زیره سبز، زنیان، شبدر گلزرد و مرزنگوش (تا 200 دسیزیمنس بر متر) ؛ کاهو و کنجد (تا 250 دسیزیمنس بر متر) ؛ خرفه، قدومه و شنبلیله (تا 450 دسیزیمنس بر متر) بود. شمارش تعداد بذر جوانهزده هر روز انجام گردید. گیاه دارویی بالنگو تحت تأثیر موسیلاژ ترشح یافته از پوسته خود قرار گرفت ولی توانست جوانه بزند. از گیاهان مورد بررسی گیاهان شنبلیله، خرفه و قدومه در برابر میزان شوری اعمال شده، از همه متحملتر و دارای سرعت رشد بیشتری بودند و در مقابل گیاهان بارهنگ، بالنگو و شوید از بقیه حساستر بودند. | ||
کلیدواژهها | ||
تنش شوری؛ جوانهزنی؛ گیاهان دارویی | ||
مراجع | ||
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