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کمی‌سازی آستانه تحمل جوانه‌زنی بذر گیاه کُنار رملیک (Ziziphus nummularia L.) به تنش شوری در دماهای مختلف | ||
| علوم و فناوری بذر ایران | ||
| مقاله 9، دوره 11، شماره 2 - شماره پیاپی 26، شهریور 1401، صفحه 115-127 اصل مقاله (379.86 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2022.356715.1414 | ||
| نویسندگان | ||
| فاطمه پیرمرادی1؛ عبدالمهدی بخشنده2؛ سید امیر موسوی* 3؛ محمد حسین قرینه4؛ علی مشتطی1 | ||
| 1دانشـگاه علوم کشاورزی و منابع طبیعی خوزستان | ||
| 2گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان | ||
| 3عضو هیأت علمی گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان. | ||
| 4دانشگاه علوم کشاورزی و منابع طبیعی خوزستان | ||
| چکیده | ||
| به‌منظور بررسی اثر همزمان دما و تنش شوری بر ویژگی‌های جوانه‌زنی گیاه کنار رملیک آزمایشی به‌صورت فاکتوریل دو عاملی در قالب طرح کاملاً تصادفی با سه تکرار در آزمایشگاه تکنولوژی بذر دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی خوزستان در سال 1398 انجام شد. عامل اول تنش شوری (غلظت‌های صفر ، 50، 100، 150، 200، 250 و 300 میلی‌مولار) و عامل دوم دما (5 ، 10، 15، 20، 25، 30، 35 و 40 درجه سانتی‌گراد) بود. نتایج آزمایش نشان داد که جوانه‌زنی در در دمای 5 و 10 درجه سانتی‌گراد، جوانه‌زنی در هیچ کدام از سطوح شوی اتفاق نیفتاد. در همه‌ی تیمارهای دمایی، با افزایش غلظت شوری از جوانه‌زنی و رشد گیاهچه کاسته شد. حد آستانه تحمل به شوری جوانه‌زنی بذر کنار رملیک در دمای 25 درجه سانتی‌گراد، غلظت 173 میلی‌مولار شوری بود که با افزیش دما از 25 به 35 درجه سانتی‌گراد، حد آستانه به 150 میلی‌مولار کاهش یافت. بیشترین ویژگی‌های جوانه‌زنی کنار رملیک در دمای 25 درجه سانتی‌گراد ایجاد شد. با توجه به این که کنار رملیک قادر به تکمیل جوانه‌زنی در 250 میلی‌مولار نمک بود، این گیاه در مرحله جوانه‌زنی، به‌عنوان نیمه متحمل به تنش شوری ارزیابی می‌شود. | ||
| کلیدواژه‌ها | ||
| بنیه؛ تنش؛ شاخص جوانه‌زنی؛ درصد جوانه زنی؛ سرعت جوانه زنی | ||
| عنوان مقاله [English] | ||
| Quantification of Tolerance Thresholds of Ramlik (Ziziphus nummularia L.) Seed Germination to Salinity Stresses at Different Temperatures | ||
| نویسندگان [English] | ||
| Fatemeh Primoradi1؛ Abdolmahdi Bakhshandeh2؛ Seyed Amir Moosavi3؛ Mohammad Hossain Gharineh4؛ Ali Moshatati1 | ||
| 1Agricultural Sciences and Natural Resources University of Khuzestan | ||
| 2Agricultural Sciences and Natural Resources University of Khuzestan | ||
| 3Department of Plant production of Genetics, Khuzestan University of Agricultural Sciences and Natural Resources. | ||
| 4Agricultural Sciences and Natural Resources University of Khuzestan | ||
| چکیده [English] | ||
| In order to investigate the combined effects of temperature and salinity stress on seed germination properties of ziziphus (Ramlik), a factorial experiment conducted at seed technology laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in 2019. The experiment was arranged as complete block design with three raplications. First factor was salinity (0, 50, 100, 150, 200, 250 and 300 mM) and second factor was temperature (5, 10, 15, 20, 25, 30, 35 and 40 oC). Results of the experiment revealed that there was no seed germination in 5 oC, 10 oC at all salinity treatments. Seed germination and seedling growth were declined at all temperature treatments bythe increase in salinity concentrations. Salinity tolerance threshold of Ramlik at 25 OC was 173 mM but as temperature increased to 35 oC, it declined to 150 mM. The highest seed germination properties of Ramlik were observed at 25 oC. An increase in salinity led to a lower seed germination rate. As Ramlik seeds were capable to complete their germination at | ||
| کلیدواژه‌ها [English] | ||
| Seed vigor, Stress, Germination index, Germination percentage, Germination rate | ||
| مراجع | ||
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