تأثیر تیمارهای شکست خواب بذر بر جوانه زنی کرفس کوهی توده کوهرنگ (Kelussia odoratissma Mozaff)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار، دانشگاه آزاد اسلامی واحــد اضفهان (خوراسگــان)، گروه زراعت، اصفهان، ایران

2 هیأت علمی دانشگاه آزاد اسلامی واحد اردستان، گروه زراعت، اصفهان، ایران

چکیده

کرفس کوهی با نام علمی Kelussia odoratissma Mozaff از گیاهان مرتعی و دارویی بومی ایران است که به علت برداشت غیر مجاز در معرض انقراض می‌باشد. تحقیق حاضر به بررسی تیمار مناسب برای تحریک جوانه‌زنی بذرهای این گیاه می‌پردازد. این تحقیق در قالب طرح کاملاً تصادفی بصورت آزمایش فاکتوریل در چهار تکرار انجام شد. تیمارهای آزمایش شامل سرمادهی مرطوب (دمای چهار درجه سانتی-گراد به مدت صفر، چهار و هشت هفته)، هورمون‌های جیبرلین (GA)، بنزیل آدنین (BA)، نفتالین استیک اسید (NAA)، ایندول بوتیریک اسید (IBA) (محلول های 500 پی پی ام) و ترکیبی از 4 هورمون (GA+IBA)، (GA+ NAA)، (GA+BA)، (IBA +NAA)، (IBA +BA)، (NAA+BA)، (GA+ IBA +NAA)، (GA+ IBA +BA)، (GA+NAA+BA)، (IBA +NAA+BA)، (GA+ IBA +NAA + BA) بودند. نتایج نشان داد که تیمارهای هورمونی و سرمادهی هر یک به تنهایی پارامترهای جوانه‌زنی را افزایش دادند، هر چند تیمار 8 هفته سرمادهی و اسید جیبرلیک مؤثرترین تیمارها بودند. بیشترین درصد جوانه‌زنی در GA، BA، GA+IBA+IBA و IBA بعد از 8 هفته سرمادهی در دمای 4 درجه مشاهده شد. نتایج نشان داد کرفس کوهی دارای خواب فیزیولوژیک بوده و تیمارهای با بیشترین اثر در شکستن خواب بذر GA، BA، GA+IBA+BA، BA و IBA در شرایط 8 هفته سرمادهی بودند.

کلیدواژه‌ها


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