تنوع فنوتیپی خانواده های جو حاصل از تلاقی ارقام بادیا و کومینو

نوع مقاله: پژوهشی

نویسندگان

1 گروه بیوتکنولوژی،دانشگاه گنبد کاووس، گنبد کاووس، ایران

2 گروه تولیدات گیاهی، دانشگاه گنبد کاووس، گنبد کاووس، ایران

3 بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی مازندران، ساری، ایران

4 گروه زیست‌شناسی، دانشگاه گنبد کاووس، گنبد کاووس، ایران

10.22034/aej.2017.532506

چکیده

به منظور بررسی تنوع و روابط موجود بین صفات زراعی جو، آزمایشی با 100 خانواده از نسل سوم جو حاصل تلاقی دو رقم بادیا و کومینو در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در مزرعه پژوهشی دانشگاه گنبد کاووس در سال زراعی 1394-1393 اجرا شد. خانواده­های جو از لحاظ طول ریشک، تعداد سنبلچه در سنبله به معنی‌داری متنوع بودند. عملکرد دانه با وزن کل سنبله، تعداد بذر جوانه زده، ارتفاع گیاه، طول ریشک و عملکرد بیولوژیک همبستگی مثبت و معنی­دار داشت و بیش‌ترین میزان همبستگی بین عملکرد دانه با وزن کل سنبله مشاهده شد. در تجزیه رگرسیون گام به گام صفات تعداد بذر جوانه زده، روز تا سنبله­دهی، قطر دانه، تعداد دانه در سنبله، طول ریشک سهم بالا و مؤثری در عملکرد دانه داشتند. در تجزیه علیت عاملی، صفتی که بیش‌ترین اثر مستقیم را روی عملکرد داشت تعداد بذر جوانه زده بود. با تجزیه خوشه­ای به روش وارد خانواده­های مورد مطالعه در سه گروه طبقه‌بندی شدند و گروه سوم به عنوان گروه مطلوب برگزیده شد. در مجموع، مهمترین عوامل مؤثر بر افزایش عملکرد خانواده­های جو، تعداد بذر جوانه زده و روز تا سنبله­دهی بود و با تکیه بر این صفات می­توان گزینش مناسبی در جهت بهبود عملکرد دانه جو انجام داد.

کلیدواژه‌ها


عنوان مقاله [English]

Phenotypic diversity in families derived from cross between Badia and Komino barley cultivars

نویسندگان [English]

  • Atefeh Kaviani Charati 1
  • Hossein Sabouri 2
  • HosseinAli Fallahi 3
  • Eisa Jorjani 4
1 Agricultural Biotechnology Department, Gonbad Kavous University, Gonbad Kavous, Iran
2 Department of Plant Production, Gonbad Kavous University, Gonbad Kavous, Iran
3 Agronomic and Horticultural Research Department, Research and Education Center of Agriculture and Natural Resources of Mazandaran, Agricultural Extension and Education Research Organization, Sari, Iran
4 Department of Biology, Gonbad Kavous University, Gonbad Kavous, Iran
چکیده [English]

To study phenotypic diversity and relationship among agronomical traits of 100  barley  F3 generation families derived from cross between Badia × Komino barely cultivars, an experiment was conducted based on randomized complete block design with three replications at research field of Gonbad Kavous University during 2014-2015. Barley families had significantly high diversity in terms of awn length, spikelet no/spike. Grain yield was positive significantly correlated with total spike weight, seedlings number, plant height, awn length and biological yield and the highest correlation was observed between grain yield and total spike weight. In stepwise regression analysis, traits of seedlings number, days to heading, grain diameter, grains per spike, awn length had high contributed to grain yield. In path analysis the trait that had the most direct effect on yield was seedlings number. Barely families were classified into three groups regarding cluster analysis using Ward method and the third group was chosen as desirable one. On the whole, The most important factors influencing on yield increment of barley families was seedlings number and days to heading and these traits could be suitable choices to be used in barley breeding improvement programs.

کلیدواژه‌ها [English]

  •  biodiversity
  •  cluster analysis
  •  correlation
  •  genetic diversity
  •  path analysis
  •  stepwise regression
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