اثر تنش شوری بر ارقام برنج (Oryza Sativa L.) در مرحله گیاهچه‌ای و زایشی تحت شرایط کشت هیدروپونیک

نوع مقاله: مقاله پژوهشی

نویسندگان

1 عضو هیات علمی و مربی دانشگاه آزاد اسلامی، واحد آستارا، گروه کشاورزی، آستارا، ایران

2 استادیار، گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی واحد آستارا، آستارا، ایران

چکیده

بر روی ارقام برنج دو آزمایش جداگانه در مرحله گیاهچه‌ای و زایشی به ترتیب در شرایط آزمایشگاهی و اتاقک رشد به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی (فاکتور اول 10 سطح شوری و فاکتور دوم 10 ژنوتیپ برنج) در سه تکرار اجرا شد. بر اساس نتایج، با افزایش سطوح شوری، وزن خشک‌ریشه، وزن خشک ساقه و مقدار پتاسیم برحسب درصد ماده خشک کاهش و مقدار سدیم اندام، افزایش و در مرحله رشد زایشی، ارتفاع بوته، تعداد پانیکول، تعداد دانه پر در پانیکول و وزن دانه پر در پانیکول کاهش یافت. تجزیه خوشه‌ای بر مبنای صفات مورد بررسی در مرحله زایشی، ارقام مورد مطالعه را به چهار گروه تقسیم کرد و رقم غریب سیاه ریحانی به تنهایی در گروهی مجزا قرار گرفت که به‌عنوان یک رقم و منبع ژنتیکی متحمل به شوری جهت استفاده در برنامه‌های به نژادی قابل توصیه می‌باشد

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of salinity stress on rice varieties (Oryza Sativa L.) in seedling and reproductive stages under hydroponic culture conditions

نویسندگان [English]

  • Farzin Saeidzadeh 1
  • Reza Taghizadh 2

1 1- Lecturer, Department of Agriculture and Plant breeding, Astara Branch, Islamic Azad University, Astara, Iran

2 Assistant professor, Department of Agronomy and plant breeding, Astara branch, Islamic Azad University, Astara, Iran.

چکیده [English]

To survey the effect of different salinity levels on rice varieties, two separate experiments were carried out at germination and reproductive stages under laboratory and growth chamber conditions, respectively under in a factorial randomized complete block design (first factor 10 salinity levels and second factor 10 rice varieties). According to results, with increasing salinity levels, the dry weight of root and shoot and the amount of potassium in terms of dry matter percentage was decreased and the dry matter content of sodium in organ was increased and at reproductive stage, the plant height, panicle number, number of filled grains in panicles and filled seed weight in panicle were reduced. Cluster analysis, based on the studied traits at the reproductive stage, divided the cultivars into four distinct groups, and Garib siyah reyhani cultivar were isolated in a separate group, that it's possible to recommended as a cultivar and source of salt tolerance for use in breeding program.

کلیدواژه‌ها [English]

  • Rice varieties
  • Salinity
  • Germination stage
  • Reproductive stage

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دوره 32، شماره 2 - شماره پیاپی 60
تابستان 1398
صفحه 119-136