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مطالعه تأثیر هیدروپرایمینگ و اُسموپرایمینگ بر بهبود خصوصیات گیاهچهای دو رقم برنج | ||
| علوم و فناوری بذر ایران | ||
| دوره 10، شماره 2 - شماره پیاپی 22، تیر 1400، صفحه 111-126 اصل مقاله (391.86 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2020.342788.1338 | ||
| نویسندگان | ||
| محمد خادمی1؛ فائزه زعفریان* 2؛ شهرام نظری3؛ محمدعلی اسماعیلی1 | ||
| 1گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 2گروه زراعت، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 3بخش اصلاح و تهیه بذر، موسسه تحقیقات برنج کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، رشت، ایران | ||
| چکیده | ||
| بهمنظور بررسی اثر هیدروپرایمینگ و اُسموپرایمینگ بر خصوصیات گیاهچهای برنج آزمایشی بصورت فاکتوریل در قالب طرح کاملاً تصادفی در سه تکرار انجام شد. تیمارهای این تحقیق شامل دو رقم برنج (طارم و شیرودی) و پیش تیمار در پنج سطح شامل پیش تیمار با کلرید کلسیم و کلرید پتاسیم (پتانسیل اُسمزی 25/1- بار در 24 ساعت)، اسید آسکوربات (10 میلیگرم در یک لیتر آب به مدت 24 ساعت)، آب (به مدت 48 ساعت) و شاهد (بدون پیش تیمار) بود. اثر متقابل رقم و پیش تیمار نشان داد که بالاترین درصد جوانهزنی در محدوده 100-97 درصد در ارقام شیرودی و طارم تحت پیش تیمار با کلرید کلسیم و کلرید پتاسیم مشاهده شد. همچنین کمترین درصد جوانهزنی با 33/85 و 33/77 درصد بهترتیب تحت تیمار شاهد در رقم شیرودی و طارم بهدست آمد. پیش تیمار با کلرید کلسیم و کلرید پتاسیم سبب افزایش بهترتیب 52 و 54 درصدی سرعت جوانهزنی نسبت به تیمار شاهد گردید. طول ریشهچه و ساقهچه در رقم شیرودی بهترتیب 97/5 و 4/5 سانتیمتر و در رقم طارم 01/4 و 59/4 سانتیمتر بود. نتایج نشان داد که پیش تیمار با کلرید کلسیم، کلرید پتاسیم، اسید آسکوربات و آب بهترتیب 69، 64، 13 و 32 درصد در رقم شیرودی و بهترتیب 91، 70، 47 و 43 درصد در رقم طارم نسبت به تیمار شاهد سبب افزایش شاخص طولی بنیه بذر گردید. همچنین پیش تیمار با کلرید کلسیم، کلرید پتاسیم، اسید آسکوربات و آب بهترتیب 110، 95، 50 و 47 درصد شاخص وزنی بنیه بذر را نسبت به تیمار شاهد افزایش داد. | ||
| کلیدواژهها | ||
| درصد جوانهزنی؛ شاخص طولی بنیه بذر؛ کلرید پتاسیم؛ کلرید کلسیم | ||
| عنوان مقاله [English] | ||
| Effect of Hydropriming and Osmopriming on Seedling Improvement of Two Rice Cultivars | ||
| نویسندگان [English] | ||
| Mohammad khademi1؛ Faezeh Zaefarian2؛ Shahram Nazari3؛ Mohammad Ali Esmaelee1 | ||
| 1Department of Agronomy, Sari Agricultural Sciences and Natural Resources University | ||
| 2Department of Agronomy, Faculty of Crop Sciences, Sari Agricultural Science and Resources University | ||
| 3Branch, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran | ||
| چکیده [English] | ||
| In order to investigate the effect of hydropriming and osmopriming on the characteristics of experimental rice seedlings, the treatment was performed in a completely randomized design in three replications.Treatments included two rice cultivars (Tarom and Shiroudi) and priming at five levels including calcium chloride and potassium chloride priming (Ψs -1.25 MPa), ascorbate acid (10 mg l-1), hydropriming (for 48 hours) and control (no priming). In this study, seedling characteristics were measured. Interaction of cultivar and priming showed that the highest germination percentage was observed in the range of 97-100% in Shiroudi and Tarom cultivars primed with calcium chloride and potassium chloride. The lowest germination percentage (85.33% and 77.33%, respectively) was obtained under control in Shiroudi and Tarom cultivars, respectively. The highest germination rate was obtained in priming with calcium chloride and potassium chloride, which increased the germination rate by 52 and 54%, respectively. The effect of cultivar and priming on root and shoot length as well as root and shoot dry weight were significant at 1% probability level. also, root and shoot length were 5.97 and 5.4 cm in Shiroudi and 4.01 and 4.59 cm in Tarom, respectively. The results showed that priming with calcium chloride, potassium chloride, ascorbic acid and water increased seedling length vigor indices 69, 64, 13 and 32% in Shiroudi and 91, 70, 47 and 43% in Tarom, respectively compared to control. Also, priming with calcium chloride, potassium chloride, ascorbic acid and water increased seedling weight vigor indices by 110, 95, 50 and 47%, respectively. | ||
| کلیدواژهها [English] | ||
| Germination percentage, Seedling length vigor indices, Potassium chloride, Calcium chloride | ||
| مراجع | ||
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