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ارزیابی تحمل تنش آبی، عملکرد علوفه خشک و صفات بیوشیمیایی پنج رقم یونجه | ||
به زراعی کشاورزی | ||
مقاله 8، دوره 23، شماره 4، دی 1400، صفحه 808-795 اصل مقاله (2.28 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jci.2021.312132.2465 | ||
نویسندگان | ||
محمود مرادی چگنی1؛ احمد علی شوشی دزفولی* 2؛ محمود توحیدی3؛ مهدی صادقی3؛ فربد فتوحی3 | ||
1دانشجوی دکتری، گروه زراعت، دانشگاه آزاد اسلامی، واحد دزفول، دزفول، ایران. | ||
2استادیار، بخش تحقیقات اصلاح و تهیه نهال و بذر، مرکز تحقیقات کشاورزی و منابع طبیعی صفی آباد، سازمان تحقیقات، آموزش و ترویج کشاورزی، دزفول، ایران. | ||
3استادیار، گروه زراعت، دانشگاه آزاد اسلامی، واحد دزفول، دزفول، ایران. | ||
چکیده | ||
یکی از اقدامات مهم جهت دستیابی به ارقام متحمل به خشکی، غربالگری و انتخاب ارقام براساس عملکرد و صفات بیوشیمیایی میباشد. این پژوهش در قالب طرح آماری بلوکهای کامل تصادفی بهروش کرتهای یکبار خردشده در سه تکرار طی دو سال زراعی (98-1396) در مرکز تحقیقات کشاورزی صفیآباد دزفول انجام شد. در کرتهای اصلی رژیمهای مختلف آبیاری براساس 25، 50، 75 و 100 درصد نیازآبی و در کرتهای فرعی پنج رقم یونجه بغدادی، نیکشهری، یزدی، امید و مساسرسا مقایسه شدند. نتایج نشان داد تنش آبی ناشی از رژیم آبیاری باعث کاهش معنیدار عملکرد علوفه خشک و تغییرات معنیدار مقدار قند محلول، میزان گلوتاتیون پراکسیداز و میزان کاتالاز موجود در برگ یونجه شد، اما تأثیر معنیدار بر پروتئین کل محلول نداشت. برترین کلاس آماری عملکرد علوفه خشک هر چین به رقم بغدادی با تیمار تأمین 100 درصد نیاز آبی با عملکرد علوفه خشک 824/2 تن در هکتار و کمترین کلاس آماری نیز به رقمهای یزدی و مساسرسا با آبیاری براساس 25 درصد نیاز آبی بهترتیب با عملکرد علوفه خشک 598/0 و 546/0 تن در هکتار تعلق داشت. بین رقمهای مورد بررسی، رقم یزدی بهدلیل پایداری عملکرد علوفه خشک و همچنین مقادیر بالای آنتیاکسیدان در برگ تحت تنش آبی، بهعنوان رقم متحمل به تنش آبی شناخته شد. | ||
کلیدواژهها | ||
آنتی اکسیدان؛ تنش آبی؛ علوفه؛ قند محلول؛ کاتالاز | ||
عنوان مقاله [English] | ||
Evaluation of water stress tolerance, dry forage yield and biochemical traits of five alfalfa cultivars | ||
نویسندگان [English] | ||
Mahmood Moradi Chegeni1؛ Ahmad Ali Shoushi Dezfuli2؛ Mahmood Tohidi3؛ Mehdi Sadeghi3؛ Farbod Fotouhi3 | ||
1Ph.D. Candidate, Department of Agronomy, Islamic Azad University, Dezful branch, Dezful, Iran. | ||
2Assistant Professor, Department of Seed and Plant Improvement Research Department, Safiabad Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Dezful, Iran. | ||
3Assistant Professor, Department of Agronomy, Islamic Azad University, Dezful branch, Dezful, Iran. | ||
چکیده [English] | ||
One of the important activities to achieve drought tolerant cultivars is screening and selection of cultivars, based on yield and biochemical characteristics. A split-plot experiment arranged in a randomized complete blocks design with three replications has been carried out in Safiabad Agricultural Research Center during two growing seasons (2017-19). The main plots are consisted of different irrigation regimes based on crop’s water requirement (25%, 50%, 75%, and 100%) and sub plots include five levels of alfalfa cultivars (Baghdadi, Nikshahri, Yazdi, Omid, and american Mesa-Sirsa). Results show that drought stress due to irrigation regimes have resulted in a significant reduction of forage dry matter yield and considerable changes of soluble sugar, glutation peroxidase, and catalase in alfalfa leaves. However, it has not greatly affected total protein. For forage dry matter yield, the highest statistical class belongs to Baghdadi cultivar under 100% water requirement supply treatment (2.824 t.ha-1). The lowest statistical class for forage dry matter yield has been observed in Yazdi and Mesa-Sirsa cultivars under 25% water requirement supply treatment (0.598 and 0.546 t.ha-1), respectively. Among the cultivars, examined in this experiment, Yazdi has been identified as a drought tolerant cultivar due to the stability of dry forage yield as well as high leaf antioxidants content. | ||
کلیدواژهها [English] | ||
Antioxidant, Water stress, Fodder, Soluble sugar, Catalase | ||
مراجع | ||
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