گروه‌بندی لاین‌های امیدبخش برنج بر اساس صفات زراعی و مورفولوژیک

نوع مقاله: پژوهشی

نویسندگان

1 ایستگاه تحقیقات برنج تنکابن، مؤسسه تحقیقات برنج کشور، سازمان تحقیقات، ترویج و آموزش کشاورزی، چپرسر، ایران

2 گروه کشاورزی اکولوژیک، دانشگاه شهید بهشتی، تهران، ایران

3 مؤسسه تحقیقات برنج کشور، سازمان تحقیقات، ترویج و آموزش کشاورزی، رشت، ایران

10.22034/aej.2017.533353

چکیده

این پژوهش با هدف بررسی تنوع زراعی و مورفولوژیک لاین­ های امیدبخش برنج انجام شد. برای این منظور، 16 لاین برنج در قالب طرح بلوک ­های کامل تصادفی با چهار تکرار در سال زراعی 1392 در ایستگاه تحقیقات برنج تنکابن (چپرسر) مورد بررسی قرار گرفت. صفات زراعی و مورفولوژیک شامل ارتفاع بوته، تعداد پنجه، طول خوشه، مساحت برگ پرچم، تعداد دانه پر، تعداد دانه پوک، تعداد دانه کل، وزن هزار دانه، وزن خوشه و عملکرد دانه در کلیه لاین­ ها اندازه­ گیری شد. تجزیه خوشه ­ای با روش وارد لاین ­ها را در سه گروه قرار داد و گروه­ های مختلف دارای تنوع در صفات زراعی بودند. رگرسیون گام به گام نشان داد که وزن خوشه، مساحت برگ پرچم و ارتفاع بوته مهم­ترین صفات تبیین­ کننده کل تغییرات عملکرد بودند. در مجموع از لاین­ های شماره 11، 13 و 15 که دارای ظرفیت بالاتر عملکرد و خصوصیات مورفولوژیکی مناسبی نسبت به سایر لاین­ های این تحقیق می­ باشند می­ توان به عنوان جامعه مبنا استفاده و به عنوان لاین­ های مطلوب جهت برنامه­ های به زراعی، در شرایط مشابه با این آزمایش قابل توصیه باشند.

کلیدواژه‌ها


عنوان مقاله [English]

Promising rice lines clustering based on morphological and agronomic traits

نویسندگان [English]

  • Ali Mohaddesi 1
  • Saeid Bakhshipour 2
  • Mitra Yekta 3
  • Maryam Poshtiban 3
1 Tonekabon Rice Research Station, Rice Research Institute o f Iran, Agricultural Research Education and Extension Organization, Chaparsar, Iran
2 Agroecology Department, Shahid Beheshti University, Tehran, Iran
3 Rice Research Institute of Iran, Agricultural Research Education and Extension Organization, Rasht, Iran
چکیده [English]

The current study was conducted to evaluate genetic diversity of rice  promosing lines using multivariate analyses on agronomic and morphological traits. Sixteen rice lines were planted in a randomized complete block design with four replications in 2009 at the Tonekabon (Chaparsar) Rice Research Station in Iran. Agronomic and morphological characteristics including plant height, tiller number, panicle length, flag leaf area, filled, empty and total grains number, thousand kernel weight, panicle weight and yield were assessed. Genotypes were classified into three groups using Ward’s method. Results of stepwise regression analysis for  yield indicated that three traits of panicle weight, flag leaf area and plant height showed higher variation and explained total yield variations. In general, genotypes number 11, 13 and 15, which had higher yield and morphological characteristics than others could be used as a base community and desirable lines for agronomic programs, and they is recommended in the same conditions as this experiment.

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