برآورد معیار‌های انتخاب در ژنوتیپ‌های عدس (Lens Culinaris) تحت شرایط دیم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، موسسه تحقیقات اصلاح تهیه نهال و بذر، سازمان تحقیقات، آموزش و ترویج کشاورزی، خرم آباد، ایران

2 استادیار، گروه کشاورزی، دانشگاه پیام نور، تهران، ایران

10.22034/plant.2024.140969.1088

چکیده

عدس یکی از مهمترین حبوبات است که با داشتن میزان بالای پروتئین و ویتامین های A و B ، فیبر، پتاسیم و آهن بوده یک غذای ارزان قیمت برای افراد کم درآمد می‌باشد. این مطالعه با هدف تعیین تنوع، وراثت‌پذیری، همبستگی بین عملکرد و اجزاء عملکرد در 14 ژنوتیپ عدس در قالب طرح بلوک کامل تصادفی با 3 تکرار انجام شد. نتایج نشان داد که تعداد شاخه ثانویه در بوته و درجه باردهی بالاترین ضریب تغییرات ژنوتیپی و فنوتیپی نشان دادند اما کمترین ضریب تغییرات ژنوتیپی و فنوتیپی برای تعداد غلاف و تعداد بوته یافت شد. بیشترین وراثت‌پذیری به ترتیب برای وزن صد‌دانه، تعداد غلاف دو‏بذری، عملکرد بیولوژیکی، عملکرد دانه، درجه باردهی و ارتفاع بوته برآورد شد. پیشرفت ژنتیکی به همراه وراثت‌پذیری بالا برای تعداد غلاف دو‌بذری و عملکرد بیولوژیکی مشاهده گردید. همبستگی فنوتیپی مشخص کرد که بهره‌وری از بارش، عملکرد بیولوژیکی و ارتفاع بوته بالاترین همبستگی مثبت معنی‌دار با عملکرد دانه داشتند. انجام تجزیه علیت بر اساس رگرسیون گام به گام مشخص کرد که صفت بهره‌وری از بارش بیشترین اثر مستقیم روی عملکرد دانه داشت در حالیکه تعداد شاخه ثانویه اثر غیر‌مستقیم منفی از طریق بهره‌وری از بارش بر عملکرد دانه داشت. بدین معنا افزایش تعداد شاخه ثانویه با کاهش بهره‌وری بارش باعث کاهش عملکرد دانه می‌شود. بطورکلی می‌توان نتیجه گرفت صفات بهره‌وری از بارش و عملکرد بیولوژیکی شاخص‌های انتخاب مناسبی برای بهبود عملکرد دانه در گیاه عدس هستند.

کلیدواژه‌ها

عنوان مقاله [English]

Estimation of selection criteria in Lens culinaris under dryland Condition

نویسندگان [English]

  • Payam Pezeshkpour 1
  • Soheila Afkar 2
1 Assistant professor, Seed and Plant Improvement Institute, Agricultural Research Education and Extension Organization, Khorramabad, Iran
2 Assistant Professor, Agriculture Department,, Payame Noor University, Teharan, Iran
چکیده [English]

Lentils are one of the most important legumes, which have a high amount of protein and vitamins A and B, fiber, potassium and iron, and are an inexpensive food for low-income people. The objective of this study was the determination of variability, heritability, correlations between yield and yield components in 14 Lentil (Lens culinaris L.) genotypes using a randomized complete block design with three replications. The results showed that secondary stem per plant and productivity degree had the highest GCV and PCV but the lowest GCV and PVC was found for a number of pod/ m2 and number of the plant. Maximum heritability was estimated for 100-seed weight, number two-seed pod, biological yield, grain yield, productivity degree and plant height respectively. The high genetic advance and heritability were observed for the number of the two-seed pod and biological yield. The phenotypic correlation revealed that rainwater productivity, biological yield and plant height had the greatest, positive and significant association with seed yield. By performing path analysis based on stepwise regression, rainwater productivity had the most direct effect on seed yield, while the number of secondary stems per plant through rainwater productivity had the most indirect and negative effect on seed yield. That means with increasing number of the secondary stem, rainwater productivity is decreased which results in reduced grain yield. As a result, it was concluded that rainwater productivity and biological yield can be good selection criteria for improving seed yield per plant in Lens culinaris.

کلیدواژه‌ها [English]

  • Correlation
  • Genetic variability
  • Heritability
  • Lens culinaris
  • Path analysis

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