نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه یاسوج، ایران
2 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی- دانشگاه یاسوج
چکیده
این آزمایش به منظور بررسی اثر پوشش‌دار کردن بذر با بیوچار و کربن فعال بر برخی شاخص‌های جوانه‌زنی بذر کینوا، انجام شد و به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با چهار تکرار در سال 1399، در دانشگاه یاسوج به اجرا درآمد. عامل اول پوشش‌دار کردن بذر در چهار سطح (بدون پوشش، پوشش‌دار کردن با کربن فعال، پوشش‌دار کردن با بیوچار و پوشش‌دار کردن با کربن فعال+ بیوچار) و عامل دوم شامل تنش شوری در 4 سطح (صفر، 75، 150 و 225 میلی‌مولار کلرید سدیم) بود. نتایج برهم‌کنش تنش شوری و پوشش‌دار کردن بذر نشان داد، بیشترین محتوای قند محلول (578/28 میلی‌گرم بر گرم وزن تر بذر) و مالون دی‌آلدهید (97/2 میکرومول بر گرم وزن تر بذر) با پوشش‌دار کردن بذر با کربن فعال در سطح 150 میلی‌مولار تنش شوری مشاهده شد. همچنین بیشترین مقدار پراکسید هیدروژن (18/0 میکرومول بر گرم وزن تر بذر) و پرولین بذر (49/10 میکرومول بر گرم وزن تر بذر) در سطح 225 میلی‌مولار کلرید سدیم به ترتیب با پوشش‌دار کردن بذر با بیوچار و کربن فعال بود. پوشش‌دار کردن بذر با کربن فعال و بیوچار منجر به افزایش طول ریشه‌چه و ساقه‌چه در شرایط تنش شوری گردید. اما در شرایط تنش شوری وزن ریشه‌چه و شاخص طولی بنیه بذر با پوشش‌دار کردن بذر با کربن فعال بیشتر بهبود یافت. می‌توان بیان نمود که پوشش‌دار کردن بذر می‌تواند به میزان زیادی اثرات مضر ناشی از تنش اسمزی بر صفات جوانه‌زنی و بیوشیمیایی را در گیاهچه کینوا کاهش داده و رشد گیاهچه را بهبود بخشد.
کلیدواژه‌ها
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