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ارزیابی روابط علت و معلولی بین عملکرد دانه و اجزا آن در زنیان (Trachyspermum copticum L.) در شرایط آبیاری معمولی و تنش خشکی | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| مقاله 6، دوره 35، شماره 2 - شماره پیاپی 94، خرداد و تیر 1398، صفحه 222-239 اصل مقاله (696.43 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijmapr.2019.121543.2301 | ||
| نویسندگان | ||
| آزاده کریمی افشار* 1؛ غفار کیانی2؛ حمید نجفی2؛ امین باقی زاده3 | ||
| 1دانشجوی دکترای اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 2دانشیار، گروه اصلاح نباتات و بیوتکنولوژی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 3دانشیار، گروه بیوتکنولوژی، دانشگاه تحصیلات تکمیلی صنعتی کرمان، کرمان، ایران | ||
| چکیده | ||
| شناسه دیجیتال (DOR): 98.1000/1735-0905.1398.35.222.94.2.1575.32 زنیان (Trachyspermum copticum L.)، یکی از گیاهان معروف خانواده چتریان است که از نظر تولیدات دارویی و اقتصادی دارای اهمیت میباشد. بهمنظور تعیین مهمترین صفات مؤثر بر عملکرد دانه، آزمایشی بهصورت کرتهای خردشده در دو شرایط آبیاری معمولی و تنش خشکی بهعنوان عامل اصلی و 36 اکوتیپ زنیان متعلق به 9 استان مختلف کشور بهعنوان عامل فرعی در قالب طرح بلوک کامل تصادفی با دو تکرار طی دو سال زراعی در کرمان انجام شد. نتایج تجزیه رگرسیون چندگانه خطی بهروش گام به گام نشان داد که در شرایط تنش خشکی صفات تعداد چتر در بوته، تعداد دانه در چتر و عملکرد اسانس و در شرایط آبیاری معمولی صفات عملکرد بیولوژیک، وزن هزاردانه و تعداد دانه در چتر بیشترین تأثیر را بر عملکرد دانه داشتند که بهترتیب 87% و 99% از تغییرات بهوسیله این صفات در دو شرایط تبیین شد. براساس نتایج تجزیه علیت، صفات تعداد چتر در بوته در شرایط تنش و عملکرد بیولوژیک در شرایط نرمال بیشترین اثر مستقیم را بر عملکرد دانه داشتند و بهعنوان مهمترین اجزای عملکرد دانه شناخته شدند. این صفات میتوانند بهعنوان معیارهایی مناسب برای تسهیل فرآیند انتخاب غیرمستقیم و بررسی توانمندی عملکرد دانه در برنامههای بهنژادی زنیان مدنظر قرار گیرند . | ||
| کلیدواژهها | ||
| تجزیه علیت؛ خشکی؛ رگرسیون گام به گام؛ زنیان (Trachyspermum copticum L.) | ||
| عنوان مقاله [English] | ||
| Evaluation of cause and effect relationships between grain yield and its components in Trachyspermum copticum L. under normal irrigation and drought stress conditions | ||
| نویسندگان [English] | ||
| A. Karimi Afshar1؛ Gh. Kiani2؛ H. Najafi2؛ A. Baghizadeh3 | ||
| 1Ph.D. student, Department of Plant Breeding and Biotechnology, Sari Agricultural Sciences and Natural Resources University, Sari, Iran | ||
| 2Department of Plant Breeding and Biotechnology, Sari Agricultural Sciences and Natural Resources University, Sari, Iran | ||
| 3Department of Biotechnology, Graduate University of Advanced Technology of Kerman, Kerman, Iran | ||
| چکیده [English] | ||
| Ajowan (Trachyspermum copticum L.), belonging to the Apiaceae family, is remarked as an important pharmaceutical and economical product. In order to determine the most important traits affecting grain yield, a split plot experiment was conducted in two conditions of irrigation (normal and drought stress) as the main factor and 36 ecotypes of ajowan, belonging to nine different provinces of Iran, as a sub plot based on a randomized complete block design with two replications in 2015 and 2016 crop year in Kerman. The results of linear multiple regression analysis with stepwise method showed that in drought stress condition, number of umbrellas per plant, number of seeds per umbrella and essential oil yield, and in normal irrigation conditions, biological yield, 1000-seed weight and seed number per umbrella had the highest effect on grain yield, explaining 87% and 99% of the changes, respectively. Based on the results of path analysis, traits including number of umbels per plant under stress conditions and biological yield under normal conditions had the most direct effect on the grain yield and were recognized as the most important components of the grain yield. Therefore, these traits can be considered as main appropriate criteria for facilitating the indirect selection process and evaluating the seed yield potential in ajowan breeding programs. | ||
| کلیدواژهها [English] | ||
| path analysis, drought, stepwise regression, C. copticum | ||
| مراجع | ||
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