بررسی مقاومت ژنوتیپ‌‌‌‌‌های باقلا به بیماری لکه‌شکلاتی (Botrytis fabae Sard.) در منطقه گرگان

نوع مقاله : مقالات پژوهشی

نویسندگان

دانشکده کشاورزی دانشگاه تربیت مدرس

چکیده

بیماری‌های قارچی نظیر بیماری لکه‌شکلاتی (Botrytis fabae sard)یکی از مهم‌ترین بیماری‌های گیاه باقلا (Vicia faba L.) در مناطق مرطوب می‌باشد که منجر به کاهش عملکرد باقلا می‌شود. این تحقیق با هدف بررسی مقاومت مزرعه‌ای ژنوتیپ‌های باقلا شامل 35لاین به همراه رقم شاهد حساس ILB 365 و شاهد محلی (برکت) در برابر بیماری لکه‌شکلاتی در ایستگاه تحقیقات کشاورزی گرگان انجام شد. نتایج تجزیه واریانس حاکی از اختلاف ژنوتیپ‌ها از نظر عملکرد، اجزای عملکرد و صفات مرتبط با مقاومت به بیماری در سطح احتمال یک‌درصد بود. بالاترین عملکرد دانه، ارتفاع بوته و وزن100دانه به رقم برکت تعلق داشت و ژنوتیپ‌های FLIP03-35FB، FLIP03-58FB و
FLIP03-33FB در رتبه‌های بعد قرار گرفتند. به‌‌منظور بررسی واکنش ارقام نسبت به لکه‌شکلاتی، میزان وقوع و شدت بیماری در فاصله‌های زمانی مشخص از ظهور علایم پیشرفت بیماری تا زمان برداشت اندازه‌گیری و بر این اساس، منحنی پیشرفت بیماری رسم و با استفاده از آن، متغیرهای AUDPC، rAUDPC و sAUDPC محاسبه شدند. با توجه به نتایج حاصل از تجزیه واریانس، مقایسه میانگین و تجزیه کلاستر بر اساس مقادیر AUDPC وrAUDPC ، تفاوت معنی‌داری بین ژنوتیپ‌های مورد بررسی و عکس‌العمل آن‌ها نسبت به بیماری وجود داشت. ژنوتیپ‌های ILB 365،
FLIP03-57FB، FLIP03-43FB و FLIP03-59FB حساس و ژنوتیپ‌های Icarus، FLIP03-29FB،
FLIP03-30FB، FLIP03-34FB و FLIP03-52FB با دارابودن کمترین مقادیر AUDPC مقاوم تشخیص داده شدند.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of resistance to chocolate spot (Botrytis fabae sard) in faba bean (Vicia faba L.) in Gorgan region

نویسندگان [English]

  • Fatemeh Sheikh
  • Hamid Dehghani
Tarbiat Modares University, Tehran
چکیده [English]

Fungal diseases, chocolate spot (Botrytis fabae Sard) is the most destructive diseases of faba bean and causes considerable dramatic damage losses on faba bean yield worldwide. The levels of resistance to chocolate spot were evaluated in 35 faba bean cultivars and one susceptible check (ILB365) and local check (Barkat) at the Gorgan Agricultural Research Station during the 2010 and 2011 cropping seasons. The obtained results showed a significant difference (P< 0.01) among genotypes for yield, yield component and related traits to disease resistance. Barkat, FLIP03-35FB and FLIP03-58FB produced the highest plant height, seed yield and 100 seed weight, respectively. In order to determine genotype reaction to chocolate spot, disease symptoms scored in certain intervals until harvest, then AUDPC, rAUDPC and sAUDPC was calculated. A significant variation among the tested genotypes and their reaction to chocolate spot disease was found. Results of variance, comparing the mean and also cluster analysis revealed that ILB 365, FLIP03-57FB, FLIP03-43FB and FLIP03-59FB where susceptible. Whereas, Icarus, FLIP03-29FB, FLIP03-30FB, FLIP03-34FB and FLIP03-52FB introduced as resistance genotypes to chocolate spot judged by the lowest AUDPC.

کلیدواژه‌ها [English]

  • Area Under the Disease Progress Curve
  • Cluster analysis
  • Disease Severity
  • yield

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