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بررسی رابطه سیستم ریشهای با روابط آبی کلزا در شرایط تنش خشکی | ||
| به زراعی کشاورزی | ||
| مقاله 1، دوره 18، شماره 1، فروردین 1395، صفحه 1-19 اصل مقاله (6.55 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jci.2016.56544 | ||
| نویسندگان | ||
| حمید جباری1؛ نیر اعظم خوش خلق سیما2؛ غلام عباس اکبری* 3؛ ایرج اله دادی4؛ امیر حسین شیرانی راد5؛ علی حامد6 | ||
| 1استادیار پژوهش، بخش تحقیقات دانه های روغنی، موسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج، ایران | ||
| 2استادیار، پژوهشکده بیوتکنولوژی کشاورزی ایران، کرج، ایران | ||
| 3دانشیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران | ||
| 4استاد، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران | ||
| 5استاد پژوهش، بخش تحقیقات دانه های روغنی، مؤسسة تحقیقات اصلاح و تهیه نهال و بذر، کرج، ایران | ||
| 6کارشناس ارشد زراعت، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران | ||
| چکیده | ||
| به منظور بررسی رابطه سیستم ریشهای با روابط آبی گیاه کلزا در شرایط تنش خشکی، یک آزمایش گلدانی در گلخانه فیزیولوژی پژوهشکده بیوتکنولوژی کشاورزی ایران واقع در شهر کرج، در سال 1391 انجام شد. در این بررسی پنج رقم کلزای تجاری پاییزه در چهار تیمار آبیاری، به صورت آزمایش فاکتوریل در قالب طرح پایه کاملاً تصادفی ارزیابی شدند. نتایج نشان داد که واکنش ارقام از نظر تغییرات هدایت روزنهای، عدد اسپد، طول و قطر ریشه، صفات مورفولوژی، عملکرد و اجزای عملکرد به سطوح آبیاری متفاوت بود. در تیمار شاهد، بیشترین عملکرد دانه در رقم ‘کوپر’[1] و به واسطه تولید بالاترین تعداد خورجین در گیاه مشاهده شد، درحالیکه در تیمارهای تنش خشکی رقم ‘اپرا’[2] از بالاترین عملکرد دانه برخوردار بود. این موضوع با بالاتر بودن طول و قطر ریشه در رقم ‘اپرا’ مرتبط بود که به موجب آن دوام سطح برگ بالا، بیشترین میزان هدایت روزنهای، تعداد خورجین و تعداد دانه در خورجین نیز در همین رقم مشاهده شد. نتایج کلی پژوهش حاضر نشان داد که نقش خصوصیات مورفولوژی ریشه در افزایش تحمل به خشکی در گیاه کلزا بسیار پررنگ است و یک سیستم ریشهای کارآمد به همراه هدایت روزنهای بالا، دوام سطح برگ زیاد و تولید تعداد خورجین زیاد بیشترین نقش را در پایداری عملکرد دانه کلزا در شرایط تنش خشکی دارد. [1]. Cooper [2]. Opera | ||
| کلیدواژه‌ها | ||
| تنش خشکی؛ خصوصیات ریشه؛ عملکرد دانه؛ کلزا؛ هدایت روزنه ای | ||
| عنوان مقاله [English] | ||
| Study of root system relationship with water relations in Rapeseed under drought stress conditions | ||
| نویسندگان [English] | ||
| Hamid Jabbari1؛ Nayyer Azam Khosh kholgh Sima2؛ Gholam Abbas Akbari3؛ Iraj Allahdadi4؛ Amir Hossein Shirani rad5؛ Ali Hamed6 | ||
| 1Research Assistant Professor, Department of Oil Seed Research, Seed and Plant Improvement Institute, Karaj, Iran | ||
| 2Assistant Professor, Agricultural Biotechnology Research Institute of Iran (ABRII), Karaj, Iran | ||
| 3Associate Professor, Department of Agronomy and Plant Breeding, College of Aboureyhan, University of Tehran, Tehran, Iran | ||
| 4Professor, Department of Agronomy and Plant Breeding, College of Aboureyhan, University of Tehran, Tehran, Iran | ||
| 5Research Professor, Department of Oil Seed Research, Seed and Plant Improvement Institute, Karaj, Iran | ||
| 6M.Sc. of Agronomy, Department of Agronomy and Plant Breeding, College of Aboureyhan, University of Tehran, Tehran, Iran | ||
| چکیده [English] | ||
| In order to study of root system relationship with water relations in Rapeseed under drought stress conditions, a pot experiment was carried out in greenhouse at Agricultural Biotechnology Research Institute of Iran (Karaj) in 2012. Five winter Rapeseed genotypes were evaluated under four irrigation treatments, using a factorial experiment based on randomized complete block design. The results indicated that response of genotypes to irrigation treatments was different for stomata conductivity, SPAD value, root length and diameter, morphologic characteristics, yield and yield components. In control, Cooper produced the highest grain yield that due to higher silique number per plant, whereas, ‘Opera’ had the maximum grain yield under drought stress treatments. This subject was due to higher root depth and diameter in ‘Opera’ and on the basis of these characters, the high leaf area duration, stomata conductivity, silique number and grain number was observed in ‘Opera’. In conclusion, these results showed that role of root morphologic characteristics in Rapeseed adaptation to drought tolerance is powerful and an effective root system with last stomata conductivity, more leaf area duration and high silique number were more important for yield maintenance of Rapeseed under drought stress conditions. | ||
| کلیدواژه‌ها [English] | ||
| Drought stress, Grain yield, rapeseed, Root Characteristics, Stomata conductivity | ||
| مراجع | ||
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