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کمی سازی دمای کاردینال و مدل هیدروتایم جوانه زنی بذور زیره سبز (Cuminum cyminum) | ||
| علوم و فناوری بذر ایران | ||
| مقاله 5، دوره 9، شماره 2 - شماره پیاپی 18، بهار و تابستان 1399، صفحه 61-74 اصل مقاله (769.87 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/ijsst.2019.122816.1222 | ||
| نویسندگان | ||
علی عبادی  1؛ قاسم پرمون2؛ فاطمه احمدنیا2؛ محمد گودرزی3؛ صغری قهرمانی4
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| 1گروه زراعت و اصلاح نباتات، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| 2دانشگاه محقق اردبیلی | ||
| 3دانشگاه محقق اردبیلی. | ||
| 4دانش آموخته کارشناسی ارشد رشته علوم وتکنولوژی بذر/گروه زراعت و اصلاح نباتات، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران. | ||
| چکیده | ||
| به منظور کمی سازی دمای کاردینال و مدل هیدروتایم بذور زیره سبز، آزمایشی به صورت کاملاً تصادفی با 3 تکرار در آزمایشگاه دانشکده کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی در سال 1396 اجرا شد. تیمارهای آزمایشی شامل دما-های 0، 5، 10، 15، 20، 25، 30، 35 و 40 درجه سانتیگراد و پتانسیل پایه 0، 2/0-، 4/0-، 6/0-، 8/0-، 1- و 2/1 - مگاپاسکال بود. برآورد دماهای کاردینال مورد نیاز برای کسرهای 10، 50 و 90 درصد جوانه زنی با استفاده از چهار مدل بتا، بتای اصلاح شده، دندانه ای و دو تکه ای مورد ارزیابی قرار گرفت. از شاخصهای مختلف آماری مانند ریشه میانگین مربعات خطا (RMSE)، ضریب تبیین (R2) و شاخص آکائیک (AICc) برای مقایسه بین مدلها استفاده شد. نتایج نشان داد مدل بتا نسبت به سایر مدلها واکنش سرعت جوانه زنی زیره سبز به دما را بهتر توصیف کرد، همچنین دمای کمینه جوانه زنی زیره سبز بین 7/0 تا 90/0 سانتی گراد، دمای بهینه بین محدوده 20 تا 21 درجه سانتیگراد و دمای بیشینه 35 درجه برآورد شد. همچنین بر اساس نتایج مدل هیدروتایم ضریب هیدروتایم بذور زیره 5/97 و استانه تحمل به تنش 46/0- مگاپاسکال تخمین زده شد. | ||
| کلیدواژه‌ها | ||
| "زیره سبز"؛ "مدل هیدروتایم"؛ "درصد جوانه زنی"؛ "مدل بتا" | ||
| عنوان مقاله [English] | ||
| Quantifying cardinal temperature and hydro time germination of Cuminum cyminum seeds | ||
| نویسندگان [English] | ||
| Ali Ebadi1؛ ghasem parmoon2؛ Fatme Ahmadnia2؛ Mohamad Godarzy3؛ S. Ghahremani4 | ||
| 1Department of Agronomy and Plant Breeding, Faculty of Agriculture and Nature Resources, University of Mohaghegh Ardabili, Ardabil, Iran | ||
| 2Mohaghegh Ardabili | ||
| 3University of Mohaghegh Ardabili | ||
| 4Former M.Sc. student of Seed Science and Technology/Dept. of Agronomy and Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh ardabilli, Ardabil, Iran. | ||
| چکیده [English] | ||
| In order to quantifying cardinal temperature and hydro time germination of Cuminum cyminum seeds, an experiment was conducted as completely randomized design with three replications in laboratory of Faculty of Agriculture and Natural Resources of University of Mohaghegh Ardabili in 2017. Experimental treatments were included: temperatures as, 0, 5, 10, 15, 20, 25, 30, 35 and 40 ˚C and osmotic potential as 0, -0.2, -0.4, -0.6, -0.8, -1 and -1.2 MPa. Quantifying of cardinal temperature for germination fraction of 10, 50 and 90 % were evaluated from four models as: beta, modified beta, dent-like and segmented. In this study, RMSE and R2 and AICc were used for comparison between models. Result indicted that beta model showed better responses description for germination rate of Cuminum cyminum to temperature compared with others models. However basic temperature of Cuminum cyminum was between 0.7 to 0.9 ˚C, optimum temperature about 20 to 21 ˚C and maximum temperature was 35 ˚C. In addition based on hydro time models results, θH and Ψb(50) of Cuminum cyminum were estimated 97.5 and -0.46 MPa respectively. | ||
| کلیدواژه‌ها [English] | ||
| "Cuminum cyminum", "hydrotime model", " germination percentage", "beta model" | ||
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| مراجع | ||
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