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بررسی اثر متقابل پیش تیمار بذر با اسید سالیسیلیک و متانول بر صفات جوانه زنی کلزا (رقم هایولا 401) تحت تنش خشکی | ||
علوم و تحقیقات بذر ایران | ||
مقاله 9، دوره 4، شماره 4، اسفند 1396، صفحه 101-114 اصل مقاله (1.74 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22124/jms.2018.2521 | ||
نویسندگان | ||
حسین کمائی* 1؛ حمیدرضا عیسوند2؛ ناصر اکبری2 | ||
1دانشجوی دکتری | ||
2دانشگاه لرستان | ||
چکیده | ||
بهمنظور بررسی اثر متقابل پیش تیمار بذر با اسید سالیسیلیک و متانول بر صفات جوانهزنی کلزا (رقم هایولا 401) تحت تنش خشکی، آزمایشی بهصورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار اجرا گردید. تیمارهای آزمایشی شامل پیش تیمار بذر با اسید سالیسیلیک در سه سطح صفر، 7/0 و 4/1 میلیمولار و متانول در سه سطح صفر، %3 و %6 حجمی بودند. بهمنظور اعمال تنش خشکی از پلی اتیلن گلایکول 6000 در سه سطح صفر (شاهد)، 4/0- و 8/0- مگاپاسکال استفاده شد. صفات مورد بررسی در این آزمایش شامل درصد جوانهزنی، متوسط زمان جوانهزنی، سرعت جوانهزنی، طول ریشهچه، طول ساقهچه، طول گیاهچه، وزن خشک گیاهچه و شاخص بنیه بذر بودند. نتایج نشان داد که اثر متقابل اسید سالیسیلیک و متانول بر کلیه صفات جوانهزنی کلزا (رقم هایولا 401) بهجزء طول ریشهچه معنیدار بود (01/0>P). اثر متقابل اسید سالیسیلیک و تنش خشکی بر صفات متوسط زمان جوانهزنی، سرعت جوانهزنی و طول ساقهچه کلزا (رقم هایولا 401) معنیدار بود (01/0>P)، اما در بقیه صفات اختلاف معنیداری در سطح احتمال %1 مشاهده نشد. اثر متقابل متانول و تنش خشکی بر کلیه صفات جوانهزنی کلزا (رقم هایولا 401) بهجزء درصد جوانهزنی معنیدار بود (01/0>P). بهطور کلی میتوان نتیجه گرفت که پیش تیمار بذور با غلظتهای 7/0 میلیمولار اسید سالیسیلیک و %3 حجمی متانول و اثر متقابل این دو سطح کلیه صفات جوانهزنی کلزا (رقم هایولا 401) را تحت هر دو شرایط مطلوب و اعمال تنش خشکی بهبود بخشید | ||
کلیدواژهها | ||
پرایمینگ؛ تنش خشکی؛ کلزا | ||
مراجع | ||
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