اثر آنتاگونیستی گونه‌های تریکودرما علیه Fusarium oxysporum f.sp. lycopersici عامل پژمردگی گوجه فرنگی

نویسنده

چکیده

در این تحقیق اثر بازدارندگی پنج گونه از قارچ­های تریکودرما شامل T. harzianum, T. koningi, T. longiconis, T. hamatum and T. viride علیه قارچ عامل بیماری پژمردگی فوزاریومی گوجه­فرنگی Fusarium oxysporum f.sp. lycopersici در شرایط آزمایشگاهی مورد بررسی قرار گرفت. در بین قارچ­های مورد استفاده گونه T. harzianum بیشترین و گونه T. viride کمترین تأثیر را داشتند.
در شرایط گلخانه­ای مقایسه اثر کاهش بیماری بین خاک و بذر آغشته شده با اسپور گونه        T. harzianum انجام گردید. پوشش بذرهای گوجه­فرنگی توسط اسپورهای قارچ T. harzianumنتوانست در کاهش بیماری موثر باشد در حالیکه خاک آغشته شده با بیوماس گونه مذکور به میزان 50 گرم در 65 کیلوگرم محیط ذرت- شن به طور معناداری (2/92 درصد) قادر به کنترل بیماری گردید.

کلیدواژه‌ها


عنوان مقاله [English]

Antagonistic effects of Trichoderma spp. against Fusarium oxysporum f.sp. lycopersici causal agent of tomato wilt

نویسنده [English]

  • Hesamadin Ramezani
چکیده [English]

In this study, the mycoparasitism inhibitory effects of five Trichoderma species (T. harzianum, T. koningi, T. longiconis, T. hamatum and T. viride) on the growth of the causal agent of tomato Fusarium wilt (Fusarium oxysporum f.sp. lycopersici) were investigated by dual culture in laboratory condition. In this step, the maximum and minimum inhibitory effect was caused by T. harzianum and T. viride. In the greenhouse, the comparison of the efficacy of disease decrease was carried out between soil and seed treatments affected by T. harzianum spores. Results showed that seed treatment did not cause disease decrease but soil treatment caused disease decrease by 92%. 

کلیدواژه‌ها [English]

  • Trichoderma spp
  • Mycoparasitism
  • Fusarium wilt
  • Tomato
  • Biological control
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