محبوبه شیردل آسیه سیاهمرگویی معصومه یونس آبادی


به منظور بررسی اثر دما و پتانسیل آب بر جوانه‌زنی بذر و تعیین دماهای کاردینال جوانهزنی بذور کنجد شیطانی (Cleome viscose L.)، آزمایشی بهصورت فاکتوریل در قالب طرح پایه کاملاً تصادفی در چهار تکرار در مرکز تحقیقات کشاورزی و منابع طبیعی استان گلستان در سال 1392 اجرا گردید. تیمارهای آزمایشی شامل دما در 7 سطح (15، 20، 25، 30، 35 ، 38 و 40 درجه سانتی گراد) و پتانسیل‌آب در6 سطح (0، 2-، 4-، 6-،8- و 10- بار) بودند. نتایج نشان داد که با افزایش دما تا 30 درجه سانتی گراد، درصد و سرعت جوانه‌زنی روند افزایشی و بعد از آن روند کاهشی داشت. با کاهش پتانسیل آب درصد و سرعت جوانه زنی بذر کنجد شیطانی روند کاهشی داشت. مقایسه مدلهای مختلف در تعیین دماهای کاردینال جوانهزنی، نشان داد که مدل دوتکهای توصیف بهتری در تغییرات سرعت جوانهزنی در برابر دما داشت. بر اساس خروجی این مدل، دمای پایه، مطلوب و سقف جوانهزنی این گیاه در شرایط بدون تنش به ترتیب 46/15، 21/30 و 64/39 درجه سانتیگراد برآورد شد. نتایج نشان داد که در محدوده دمای مطلوب، امکان جوانه‌زنی بذور کنجد شیطانی در پتانسیل‌های کمتر آب وجود خواهد داشت.

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ارجاع به مقاله
شیردلم., سیاهمرگوییآ., & یونس آبادیم. (2016). اثر دما و پتانسیل آب بر جوانه زنی بذر کنجد شیطانی (Cleome viscosa L.): علف هرز مهاجم مزارع سویا استان گلستان. مطالعات حفاظت گیاهان, 30(2), 292-303. https://doi.org/10.22067/jpp.v30i2.44481
نوع مقاله
علمی - پژوهشی

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