بررسی پارامترهای فتوسنتزی و عملکردی و ارتباط بین آن‌ها در ژنوتیپ‌های عدس در شرایط دیم

نوع مقاله : مقاله پژوهشی

نویسندگان

بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان زنجان، سازمان تحقیقات، آموزش و ترویج کشاورزی، زنجان، ایران

چکیده

به‌منظور بررسی پارامترهای فتوسنتزی و عملکردی گیاه عدس در شرایط دیم، لاین­های منتخب عدس به همراه ارقام شاهد در قالب طرح بلوک­های کامل تصادفی با سه تکرار در ایستگاه تحقیقات دیم خدابنده استان زنجان در دو فصل زراعی 98-1397 و 99-1398 مورد بررسی قرار گرفتند. نتایج نشان داد که تفاوت معنی‌داری در صفات تابش فعال فتوسنتزی، دمای برگ، کارآیی مصرف آب فتوسنتزی، هدایت مزوفیلی، کارآیی مصرف آب، وزن100دانه و عملکرد بین دو سال اجرای آزمایش وجود دارد. ژنوتیپ‌های مورد مطالعه در صفات دمای برگ، میزان فتوسنتز، ارتفاع گیاه، وزن100دانه و عملکرد اختلاف معنی‌داری را با یکدیگر نشان دادند که حاکی از تنوع بالای ژنتیکی این ژنوتیپ‌ها از لحاظ این صفات بود. در بین ژنوتیپ‌های مورد مطالعه ژنوتیپ G5، ژنوتیپی با ویژگی‌های برتر زراعی بود که جهت معرفی به عنوان رقم با پتانسیل عملکرد بالا قابل بررسی می‌باشد. میزان فتوسنتز با دمای برگ همبستگی منفی معنی‌دار و با صفات میزان تعرق، هدایت روزنه‌ای، هدایت مزوفیلی، کارآیی مصرف آب و وزن100دانه همبستگی مثبت معنی‌دار نشان داد. در نهایت، تجزیه رگرسیون نشان داد که دو صفت هدایت روزنه‌ای و غلظت CO2 زیر روزنه‌ای تبیین‌کننده تغییرات میزان فتوسنتز بودند.

کلیدواژه‌ها

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