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بررسی تأثیر پوششدهی بذر گندم با پلیمر سوپرجاذب AB200مایع بر بهبود جوانهزنی در شرایط تنش آبی | ||
| علوم و فناوری بذر ایران | ||
| مقاله 1، دوره 14، شماره 3 - شماره پیاپی 39، مهر 1404، صفحه 1-14 اصل مقاله (1.85 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2024.366815.1540 | ||
| نویسندگان | ||
| رادمان کریمی1؛ فرشید قادری فر* 2؛ آیدین حمیدی3؛ محسن ملک4؛ حمیدرضا صادقی پور5؛ آسیه سیاهمرگویی6 | ||
| 1دانشجوی کارشناسی مهندسی تولید و ژنتیک گیاهی، گروه اصلاح نباتات و بیوتکنولوژی، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران. | ||
| 2استاد، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران. | ||
| 3دانشیار پژوهش، موسسه تحقیقات ثبت و گواهی بذر و نهال، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران. | ||
| 4دانشآموخته کارشناسی ارشد اگروتکنولوژی، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران. | ||
| 5استاد، گروه زیست شناسی، دانشکده علوم، دانشگاه گلستان، گرگان، ایران. | ||
| 6دانشیار، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران. | ||
| چکیده | ||
| این پژوهش بهمنظور بررسی اثر پوششدار کردن بذرهای گندم رقم دیم قابوس با پلیمر سوپر جاذب مایع AB200-cدر شرایط تنش آبی در قالب طرح کاملاً تصادفی بهصورت آزمایش فاکتوریل در دو آزمایش جداگانه انجام شد. فاکتورهای آزمایشیشامل پتانسیلهای مختلف آب در سطوح ۰، ۳/۰-، ۶/۰-، ۹/۰- و و ۲/۱-مگاپاسکال و پوششدهی بذرها با پلیمر سوپرجاذب در سطوح ۲/۰، ۵/۰، 7/0 و 2میلیلیتر پلیمر سوپرجاذب برای ۱۰۰ گرم بذر گندم به همراه شاهد نتایج نشان داد که پوششدهی بذرها با پلیمر سوپرجاذب سبب افزایش درصد جوانهزنی بذرهای پوششداده شده نسبت به بذرهای بدون تیمار در پتانسیلهای ۹/۰- و ۲/۱- مگاپاسکال میشود. همچنین این تیمارها باعث افزایش سرعت رشد گیاهچههای بذرهای تیمار شده نسبت به شاهد شدند. تجزیه و تحلیل ضرایب مدل هیدروتایم نشان داد که پوششدهی بذرها با پلیمر سوپرجاذب باعث منفیتر شدن پتانسیل پایه آب یا افزایش تحمل به تنش آبی در بذرهای گندم شد. به عبارت دیگر با کاربرد این پلیمر آستانه تحمل به تنش آبی در بذرهای گندم افزایش مییابد. همچنین غلظت و یا مقدارهای مختلف پلیمر سوپرجاذب استفاده شده در پوششدهی بذر اثرات قابلتوجهی بر شاخصهای جوانهزنی و رشد گیاهچه گذاشت که نشاندهنده اهمیت استفاده از مقدار مناسب پلیمر سوپرجاذب در تیمار پوششدهی بذر گندم است. طبق نتایج این پژوهش تیمار پوششدهی بذرهای گندم با پلیمر سوپرجاذب را میتوان تکنیک کارآمد بهبوددهنده بذر در نظر گرفت که میتواند اثرات منفی تنش آبی بر جوانهزنی و رشد گیاهچه در گندم را کاهش دهد. | ||
| کلیدواژهها | ||
| بهبود بذر؛ پوششدهی بذر؛ جوانه زنی؛ مدل هیدروتایم؛ پلیمر سوپرجاذب مایع | ||
| عنوان مقاله [English] | ||
| Investigating the effect of wheat seeds coating with liquid AB200 superabsorbent polymer on germination improvement under water stress conditions | ||
| نویسندگان [English] | ||
| Radman Karimi1؛ Farshid Ghaderi-Far2؛ A. Hamidi3؛ Mohsen Malek4؛ Hamid Reza Sadeghipour5؛ Asieh Siahmarguee6 | ||
| 1Bachelor student of Plant Production and Genetic Engineering, Department of Plant Breeding and Biotechnology, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| 2Professor, Department of Agronomy, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| 3. Research associate professor, Seed and Plant Certification and Registration Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. | ||
| 4M.Sc. Graduate of Agrotechnology, Department of Agronomy, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| 5Professor, Department of Biology, Faculty of Sciences, Golestan University, Gorgan, Iran. | ||
| 6Associate Professor, Department of Agronomy, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| چکیده [English] | ||
| This research was conducted to investigate the effects of coating wheat cv. dryland Qaboos seeds by the liquid superabsorbent polymer AB200-c under water stress conditions. The factors of the experiments included different water potentials of 0, -0.3, -0.6,, -0.9 and -1.2 MPa and seed coating by superabsorbent polymer at 0, 0.2, 0.5, 0.7 and 2 ml of super absorbent polymer per 100 grams seeds. The Hydrotime model based on binomial distribution was used to investigate the reaction of seed germination to different coating treatments and water stress. Seed coating by the superabsorbent polymer increased germination percentage compared to control seeds at water potentials of -0.9 and -1.2 MPa. Also, these treatments increased the growth rate of seedlings compared to control. Based on the analysis of the coefficients in the Hydrotime model, seeds coated by the superabsorbent polymer made more negative base water potential or greater tolerance to water stress; the value of this coefficient was -1.54 MPa in the control seeds but -1.83 MPa in the coated seeds. Accordingly, polymer coating increased the threshold of tolerance to water stress in wheat seeds. Also, differential coating of seeds with the superabsorbent polymer had significant effects on germination and seedling growth criteria, which point to the importance of using an appropriate amount of superabsorbent polymer in wheat seed coating treatment. Based on this research, seed coating with the superabsorbent polymer can be considered as an efficient technique for reducing the negative effects of water stress on wheat seed germination and seedling growth. | ||
| کلیدواژهها [English] | ||
| Germination, Hydrotime model, Liquid AB200 superabsorbent polymer, Seed coating, Seed improvement | ||
| مراجع | ||
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