اثر تنش خشکی آخر فصل بر خصوصیات زراعی ارقام و لاین‌های آبی جو

نوع مقاله: پژوهشی

نویسنده

بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کرمانشاه، سازمان تحقیقات، آموزش و ترویج کشاورزی

10.22034/aej.2017.531389

چکیده

به منظور تعیین اثر تنش خشکی آخر فصل بر عملکرد و اجزای عملکرد هفت لاین پیشرفته جو آبی، به همراه ارقام نصرت و یوسف به عنوان شاهد آزمایشی به صورت کرت­ های خرد شده در قالب طرح بلوک­ های کامل تصادفی با سه تکرار در ایستگاه تحقیقات اسلام آباد غرب طی سال زراعی 92-1391 اجرا گردید. تنش خشکی و شرایط معمول به کرت­ های اصلی و نُه رقم جو به کرت­ های فرعی اختصاص یافت. اثر متقابل تنش در ژنوتیپ بر عملکرد دانه و تعداد دانه در خوشه، اثر تنش خشکی بر عملکرد دانه، وزن هزاردانه، ارتفاع بوته، عملکرد بیولوژیکی، تعداد خوشه در متر مربع، تعداد دانه در خوشه و شاخص برداشت و اثر ژنوتیپ در همه صفات مورد ارزیابی معنی­ دار بود. به طور کلی، در شرایط آبیاری معمول و تنش آخر فصل، رقم نصرت و لاین MBD-85-8 به ترتیب با میانگین 6480 و 6330 کیلوگرم در هکتار بیشترین عملکرد و لاین MBD-85-14 با میانگین 4180 کیلوگرم در هکتار کمترین عملکرد دانه را دارا بودند. بنابراین، در مناطقی که مشکل کمبود آب آخر فصل وجود دارد، می­ توان از رقم نصرت و لاین MBD-85-8 استفاده نمود.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of terminal drought stress on agronomic traits of irrigated barley lines and cultivars

نویسنده [English]

  • Alishir Niazifard
Researcher of Horticulture Crops Research Department, Kermanshah Agricultural and Natural Resources Research and Education, center, Kermanshah, Iran
چکیده [English]

To evaluate the effect of terminal drought stress on yield an yield components of seven advanced barley lines along with cultivars of Nosrat and Yosef as checks, an experiment was carried out in split plot based on randomized complete block design with three replications in Islam Abad-e Gharb Research Station during 2011-2012. Terminal drought stress and non-stress treatments were assigned in main plots and genotypes were allocated in sub-plots. Traits such as grain yield, kernel thousand weight, plant height, biomass, spike per area, seed per spike and harvest index were measured. Drought stress and genotypes interaction was significant in grain yield, kernel thousand weight, plant height, biomass, spike per area, seeds per spike and harvest index. Genotypes were different statistically in all recorded traits. On the whole, in both drough stress and normal conditions, Nosrat and MBD-85-8 had the highest grain yield with 6480 and 6330 kg/ha, respectively. Meanwhile MBD-85-14 had the lowest grain yield with 4180 kg/ha. Therefore, Nosrat and MB-85-8 are recommendable to barley-growers encountering with terminal drought stress condition.

کلیدواژه‌ها [English]

  • o late season drought stress
  • o Norsrat cultivar
  • o water stress
  • o Yusef Cultivar

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