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غربال ارقام توت فرنگی متحمل به سرمای زمستانه براساس برخی شاخص های فیزیولوژیکی | ||
| به نژادی گیاهان زراعی و باغی | ||
| مقاله 7، دوره 3، شماره 2، آذر 1394، صفحه 215-228 اصل مقاله (3.47 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| فرهاد کرمی1؛ منصور غلامی* 2؛ احمد ارشادی3؛ عادل سی و سه مرده4 | ||
| 1دانشجوی دکتری گروه علوم باغبانی دانشکده کشاورزی دانشگاه بوعلی سینا، همدان | ||
| 2استاد گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه بوعلی سینا، همدان | ||
| 3دانشیار گروه علوم باغبانی دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان | ||
| 4دانشیار گروه زراعت و اصلاح نباتات، دانشکدۀ کشاورزی، دانشگاه کردستان، سنندج | ||
| چکیده | ||
| به منظور بررسی تحمل به سرمای زمستانه هفت رقم توتفرنگی، آزمایشی بهصورت آزمایش کرتهای خرد شده در قالب طرح بلوکهای کامل تصادفی، در دانشکده کشاورزی دانشگاه بوعلی سینا در سال 1393 انجام شد. بعد از اعمال تیمار دماهای پایین (4+، 5-، 10-، 15-، 20- و 25- درجه سانتیگراد)، درصد نشت یونی برگ، شاخص خسارت یخزدگی، محتوی آب نسبی برگ، غلظت کلروفیل برگ و مقادیر نسبی پارامترهای فلورسنس کلروفیل سنجیده شد. اثر تیمار دمای پایین، رقم و برهمکنش آنها بر همه صفات مورد ارزیابی در سطح احتمال یک درصد معنیدار شد. نتایج مقایسه میانگینها نشان داد دامنه اختلاف ارقام برای صفات مورد ارزیابی در دمای 25- درجه سانتیگراد بسیار بیشتر از سایر تیمارهای دمایی بود. همبستگی بالایی بین شاخصهای ارزیابی میزان تحمل ارقام به دمای پایین وجود داشت. ارقام ‘کارسنبرگ’ و ‘کویین الیزا’ با کمترین مقادیر درصد نشت یونی و درصد خسارت یخزدگی و بیشترین مقادیر کلروفیل و مؤلفههای فلورسنس کلروفیل در دمای 25- درجه سانتیگراد، بهترتیب بیشترین تحمل به سرما را نشان دادند. کمترین تحمل به سرما، در ارقام ‘چاندلر’ و ‘تنسی بیوتی’ با بیشترین درصد نشت یونی و درصد خسارت یخزدگی و کمترین مقادیر کلروفیل و مؤلفههای فلورسنس کلروفیل در دماهای پایین مشاهده شد. | ||
| کلیدواژه‌ها | ||
| توت فرنگی؛ خسارت یخ زدگی؛ غربال گری؛ فلورسنس کلروفیل؛ نشت یونی | ||
| عنوان مقاله [English] | ||
| Screening of winter cold tolerant strawberry cultivars based on physiological indices | ||
| نویسندگان [English] | ||
| Farhad Karami1؛ Mansour Gholami2؛ Ahmad Ershadi3؛ Adel Sio Se Mardeh4 | ||
| 1Ph.D. Student, Department of Horticultural Sciences, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran | ||
| 2Professor, Department of Horticultural Sciences, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran | ||
| 3Associate Professor, Department of Horticultural Sciences, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran | ||
| 4Associate Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Kurdistan University, Sanandaj, Iran | ||
| چکیده [English] | ||
| In this study, the winter cold tolerance of seven strawberry cultivars was evaluated using a RCBD design with a split plot arrangement at Bu-Ali Sina University in 2014. After exposure of plants to low temperatures (+4, -5, -10, -15, -20 and -25oC), the values of electrolyte leakage, index of freeze injury, RWC, total chlorophyll and chlorophyll fluorescence parameters (F0, Fm, Fv and Fv/Fm) were measured. Low temperature, cultivar and their interactions had significant effects (P≤0.01) on all measured parameters. Means slicing of traits showed that genotypic differences were most obviously identified in -25oC as compared to the other temperature treatments. There was strong correlations between the evaluation methods for screening winter cold tolerant cultivars. The strawberry `Karssenberg' and `Queen Elisa' were the most cold tolerant cultivars with the lowest electrolyte leakage and freeze injury index. These cultivars had the highest chlorophyll content and chlorophyll fluorescence rates in -25oC whereas `Chandler' and `Tennessie Beauty' with the highest electrolyte leakage and freeze injury index values, the lowest chlorophyll content and chlorophyll fluorescence rates in low temperatures, were the most susceptible cultivars to low temperatures. | ||
| کلیدواژه‌ها [English] | ||
| Chlorophyll fluorescence, electrolyte leakage, freezing injury, Screening, strawberry | ||
| مراجع | ||
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