دوره 9، شماره 23 - ( پاییز 1396 )
جلد 9 شماره 23 صفحات 84-76 |
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Noori A, ashraf Mehrabi A, Safari H. (2017). Study of Correlation and Path Coefficient Analysis of Agronomic Traits and Grain Yield for Aegilops cylindrica Accessions under Non-stress and Drought Stress Conditions in Ilam. jcb. 9(23), 76-84. doi:10.29252/jcb.9.23.76
URL: http://jcb.sanru.ac.ir/article-1-876-fa.html
URL: http://jcb.sanru.ac.ir/article-1-876-fa.html
نوری افسانه، اشرف مهرابی علی، صفری هوشمند. مطالعه همبستگی و تجزیه علیت صفات زراعی و عملکرد دانه جمعیت‌های گندم نیای
وحشی Aegilops cylindrica L. در شرایط نرمال و تنش خشکی در ایلام
پژوهشنامه اصلاح گیاهان زراعی 1396; 9 (23) :84-76 10.29252/jcb.9.23.76
دانشگاه ایلام
چکیده: (3980 مشاهده)
به‌منظور بررسی روابط بین صفات زراعی و عملکرد دانه Aegilops cylindrica، 48 جمعیت این گونه گیاهی در قالب طرح آزمایشی آگمنت بر پایه طرح بلوک‌های کامل تصادفی در4 تکرار تحت دو شرایط تنش خشکی و نرمال در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ایلام مورد مطالعه قرار گرفتند. همبستگی ساده بین صفات در هر دو شرایط تنش و نرمال نشان داد که صفات عملکرد سنبله تک بوته، عملکرد بیولوژیکی تک بوته و وزن کاه تک بوته بیشترین همبستگی را با عملکرد دانه تک بوته داشتند. نتایج رگرسیون نشان داد که صفات عملکرد سنبله تک بوته، تعداد دانه در سنبله، وزن هزار دانه، وزن تک سنبله و طول سنبله در شرایط نرمال و صفات عملکرد سنبله تک بوته، وزن تک سنبله و وزن هزار دانه در شرایط تنش وارد مدل رگرسیونی شدند. به ترتیب 3/96 و 3/95 درصد از مجموع تغییرات کل با مدل رگرسیونی برازش شده در شرایط نرمال و تنش بیان شد. نتایج تجزیه علیت نیز اهمیت تأثیر این صفات اندازه‌گیری شده بر عملکرد دانه را تأیید کرد. در هر دو شرایط نرمال و تنش خشکی، عملکرد سنبله تک بوته بیشترین اثر مستقیم و مثبت را بر عملکرد دانه داشت. نتایج نشان داد که در برنامه‌های اصلاحی با هدف افزایش عملکرد دانه در جمعیت‌های Ae. cylindrica بهتر است در هر دو شرایط نرمال و تنش گزینش بر اساس عملکرد سنبله صورت پذیرد.
نوع مطالعه: پژوهشي |
موضوع مقاله:
اصلاح نباتات، بیومتری
دریافت: 1396/10/2 | ویرایش نهایی: 1398/1/25 | پذیرش: 1396/10/2 | انتشار: 1396/10/2
دریافت: 1396/10/2 | ویرایش نهایی: 1398/1/25 | پذیرش: 1396/10/2 | انتشار: 1396/10/2
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