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بررسی نقش پرایمینگ با اسید هیومیک بر تعدیل اثر تنش شوری در جوانهزنی و شاخصهای رشد بذر خیار (Cucumis sativus L.) رقم هیبرید سبا | ||
| علوم و فناوری بذر ایران | ||
| مقاله 9، دوره 14، شماره 3 - شماره پیاپی 39، مهر 1404، صفحه 43-60 اصل مقاله (1.32 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2024.364534.1511 | ||
| نویسندگان | ||
| رضا رضوانی* 1؛ بهنام کامکار2؛ زینب جباری بادخور3 | ||
| 1دانشجوی دکتری فیزیولوژی گیاهان زراعی، گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران. | ||
| 2استاد، گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران. | ||
| 3فارغ التحصیل کارشناسیارشد فیزیولوژی گیاهان زراعی، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی شیروان، دانشگاه بجنورد، ایران. | ||
| چکیده | ||
| جهت کاهش اثرات تنش شوری در صیفیجات از روشهای متفاوتی مانند اصلاح کنندههای آلی در مراحل مختلف رشدی محصول ازجمله جوانهزنی استفاده میشود. این پژوهش در سال 1402 بهمنظور بررسی اثر پرایمینگ بذر خیار با اسید هیومیک بر ویژگیهای جوانهزنی و پارامترهای رشدی گیاه تحت تنش شوری، در دو آزمایش (آزمایشگاه و گلخانه) بهصورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار اجرا گردید. فاکتورهای آزمایش شامل: تیمار اسید هیومیک در چهار سطح (0، 50 ، 100 و200 میلیگرم بر لیتر) و شوری در پنج سطح (0، 25 ، 50 ، 100 و 150 میلیمولار NaCl) بود. نتایج نشان داد که اسید هیومیک در تیمارهای تنش نسبت به شاهد، تأثیر مثبتی بر اکثر صفات جوانهزنی و رشدی خیار نظیر درصد و سرعت جوانهزنی، طول گیاهچه، وزن خشک، شاخص بنیه بذر و کلروفیل کل a و b و کاروتنوئید داشت. بیشترین درصد جوانهزنی (87 درصد) و طول گیاهچه (66/12 سانتیمتر) در تیمار 200 میلیمولار بر لیتر اسید هیومیک و در شرایط غیر شوری بدست آمد. اثر متقابل شوری و اسید هیومیک نشان داد؛ زمانی که غلظت اسید هیومیک به 100 میلیگرم بر لیتر به بالا رسید، اسید هیومیک توانست سبب کاهش اثرات منفی تنش شوری در صفت کلروفیل کل شود. بطور کلی میتوان نتیجه گرفت که پرایمینگ بذور خیار با اسید هیومیک به عنوان یک راهکار ارزان و در دسترس میتواند راهکاری برای کاهش اثر تنش شوری در مناطق با آب و یا خاک شور باشد. | ||
| کلیدواژهها | ||
| پیش تیمار؛ کلرید سدیم؛ درصد وسرعت جوانهزنی؛ ویژگیهای رشد؛ کلروفیل | ||
| عنوان مقاله [English] | ||
| Investigating the role of priming with humic acid on modulating the effect of salinity stress on the germination and growth indices of cucumber (Cucumis sativus L. cv. Saba hybrid) seed | ||
| نویسندگان [English] | ||
| Reza Rezvani1؛ Behnam Kamkar2؛ Zeinab Jabbari Badkhor3 | ||
| 1Ph.D. Student in Crop Physiology, Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 2Professor, Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 3M.Sc. Graduated in Crop Physiology, Department of Plant Production and Genetic, Shirvan Faculty of Agriculture, University of Bojnord, Bojnord, Iran. | ||
| چکیده [English] | ||
| To mitigate the detrimental effects of salinity stress on vegetable crops, various approaches, including the applying of organic inputs during different growth stages, such as germination, are employed. This study, conducted in 2023, aimed to assess the influence of humic acid pretreatment on the germination characteristics and growth parameters of cucumber (Cucumis sativus) under salt stress. Two experiments, one in the laboratory and the other in a greenhouse, were carried out using a factorial design based on a completely randomized design with three replications. The experimental factors included humic acid priming at four concentrations (0, 50, 100, and 200 mg/l-1) and salinity at five levels (0, 25, 50, 100, and 150 mM NaCl). Results indicated that humic acid exerted a positive impact on various germination and growth attributes of cucumber, including germination percentage, germination rate, seedling length, dry weight, vigor index, and chlorophyll a, b, and carotenoid under salt-stressed conditions compared to the control. The treatment with 200 mmol/l humic acid and no salt exhibited the highest germination rate (87%) and seedling length (12.66 cm). The interaction between salinity and humic acid revealed that humic acid concentrations exceeding 100 mg/l-1 could alleviate the adverse effects of salinity stress on total chlorophyll. In conclusion, the cost-effective and easily applicable method of priming cucumber seeds with humic acid presents a potential strategy to mitigate the impacts of salinity stress in regions with saline water or soil. | ||
| کلیدواژهها [English] | ||
| Pretreatment, Sodium Chloride (NaCl), Germination percentage and speed, Growth characteristics, Chlorophyll | ||
| مراجع | ||
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