دوره 10، شماره 27 - ( پاییز 1397 )
جلد 10 شماره 27 صفحات 19-10 |
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Hamze H, Asghari A, mohammadi S A, Sofalian O, an Mohammadi S. (2018). Estimates of Heritability and Association among Traits in Recombinant Inbred Lines of Spring wheat under Normal and Terminal Water Conditions. jcb. 10(27), 10-19. doi:10.29252/jcb.10.27.10
URL: http://jcb.sanru.ac.ir/article-1-580-fa.html
URL: http://jcb.sanru.ac.ir/article-1-580-fa.html
حمزه حمزه، اصغری علی، محمدی ابولقاسم، سفالیان امید، محمدی سلیمان. برآورد وراثت پذیری و ارتباط بین صفات در لاین های خالص نوترکیب گندم بهاره تحت شرایط نرمال و تنش کم آبی انتهای فصل پژوهشنامه اصلاح گیاهان زراعی 1397; 10 (27) :19-10 10.29252/jcb.10.27.10
دانشگاه محقق اردبیل
چکیده: (3048 مشاهده)
به منظور برآورد وراثت پذیری و ارتباط بین صفات 148 لاین اینبرد نوترکیب گندم نان بهاره به همراه والدین (Yecora Rojo و No. 49) در قالب طرح آلفا لاتیس با دو تکرار و در شرایط آبیاری کامل و تنش کمآبی انتهای فصل در دو سال زراعی 93 و 94 در دو مکان مورد ارزیابی قرار گرفتند. بر اساس نتایج تجزیه واریانس دادهها بین ژنوتیپها اختلاف معنی داری از لحاظ کلیه صفات وجود داشت. در شرایط نرمال رطوبتی مقدار وراثت پذیری خصوصی برآورد شده برای صفات سنبله در مترمربع، وزن ساقه، بیوماس، طول سنبله، طول و وزن پدانکل، طول ساقه، تعداد دانه و وزن سنبله در محدوده 04/15 تا 41/22 درصد و برای صفات عملکرد دانه، وزن هزار دانه و شاخص برداشت در محدوده 93/25 تا 92/26 قرار داشت. در شرایط تنش کم آبی مقدار وراثت پذیری خصوصی محاسبه شده برای طول سنبله، وزن سنبله، طول ساقه، سنبله در متر مربع، بیوماس، وزن پدانکل، طول پدانکل و وزن ساقه بین 64/13تا 35/19 درصد و برای صفات تعداد دانه، شاخص برداشت، وزن هزار دانه و عملکرد دانه در محدوده 22 تا 61/25 درصد قرار داشت. بالاترین بازده گزینشی در هر دو شرایط مربوط به صفات وزن پدانکل و شاخص برداشت بود. نهایتاً براساس نتایج تجزیه رگرسیون و علیت در مجموع دو شرایط صفات تعداد دانه و وزن هزار دانه به عنوان مؤثرترین صفات بر عملکرد دانه شناسایی شدند. بنابرین استفاده از صفات عملکرد دانه، تعداد دانه در سنبله و وزن هزار دانه به عنوان شاخص گزینشی، احتمالاً امکان دستیابی به لاینهای پرمحصول گندم را فراهم میسازد.
نوع مطالعه: پژوهشي |
موضوع مقاله:
اصلاح نباتات، بیومتری
دریافت: 1395/5/11 | ویرایش نهایی: 1397/9/17 | پذیرش: 1396/11/8 | انتشار: 1397/9/17
دریافت: 1395/5/11 | ویرایش نهایی: 1397/9/17 | پذیرش: 1396/11/8 | انتشار: 1397/9/17
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