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Bazı Entomopatojen Fungusların Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) Larvaları Üzerine Etkilerinin Belirlenmesi

Effects of Entomopathogenic Fungi on Spodoptera littoralis (Boisd.) (Lep: Noctuidae) Larvae

Journal Name:

  • Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi

Publication Year:

  • 2017
DOI: 
http://dx.doi.org/10.13002/jafag4278

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, 14 isolates of Beauveria bassiana and Metarhizium anisopliae isolated from the soil in Isparta were determined against Spodoptera littoralis larvae under laboratory conditions. Single concentration (1x107conidia/ml) of each entomopathogenic fungus was applied to the 3rd or 4th in star larvae, with agar surface method. After determination of the most effective five entomopathogenic fungi, Concentration-response mortality bioassays using 3 different concentrations (1×105, 1×106, 1×107, 1×108 and 1×109 conidia/ml) with agar surface method were performed. Number of dead insects was determined daily after applications Beauveria bassiana isolates (BMAUM-E2003, BMAUM-E6001 and BMAUM-M6001) were found to be very effective and their LT50 values were 2.76, 3.97 and 4.23 days, respectively. We believe that BMAUM-E2003 and BMAUM-E6001 isolates are worthwhile for future studies.
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Abstract (Original Language): 
Bu çalışmada, Isparta il merkezi ve çevre ilçelerinden örneklenen topraklardan izole edilen ve ön patojenite testi sonucu virülensi yüksek bulunan Beauveria bassiana ve Metarhizium anisopliae izolatlarından 14 tanesinin biyolojik etkinlikleri Spodoptera littoralis’e karşı denenmiştir. Bu fungus izolatlarından 1x107 konidi/ml konsantrasyonunda spor süspansiyonları hazırlanmış ve 3. veya 4. dönemdeki S. littoralis larvalarına agar yüzeyi biyoassay yöntemi tekniği ile denenmiştir. Bioassay uygulaması sonucu en etkili bulunan 3 izolatın S. littoralis larvalarının % 50 ölüm zamanı (LT50) ve % 50 ölüm konsantrasyonlarının (LD50) belirlenmesi için 1×105, 1×106, 1×107, 1×108 ve 1×109 konidi/ml konsantrasyonları uygulanmıştır. Sonuç olarak, Beauveria bassiana izolatları oldukça etkili bulunmuş ve bunlardan BMAUM-E2003, BMAUM-E6001 ve BMAUM-M6001 için LT50 değerleri sırası ile 2.76, 3.97 ve 4.23 gün olarak hesaplanmıştır. BMAUM-E2003 ve BMAUM-E6001 izolatlarının ileriki çalışmalar için ümit var olduğu düşünülmektedir.
FULL TEXT (PDF): 
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  • 3
159
165
  • Turkish

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