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Efficacy of native Entomopathogenic fungi isolates and biological studies on Spodoptera Littoralis (Boisd.) [electronic resource].

By:

Ali, Sahar S

Contributor(s):

EL-Sabagh, Marwa M. A

Language: English Summary language: Arabic Description: p.1183-1192Other title:

فعالية عزلات فطرية محلية ممرضة للحشرات ودراسة بيولوجية على دودة ورق القطن [Added title page title]

Uniform titles:

Egyptian journal of agricultural research, 2015 v. 93 (4) [electronic resource].

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In: Egyptian Journal of Agricultural Research 2015.v.93(4)Summary: Virulence of three local isolates of entomopathogenic fungi ; Beauveria bassiana (AUMC 9896), Lecanicillium antillanum ( = Verticillium antillanum) (AUMC 9905) and Paecilomyces lilacinus (AUMC 9897), as well as, Metarhizium anisopliae which isolated in Bio-insectcide' Production Unit, Plant Protection Research Institute were evaluated against Spodoptera littoralis larvae under laboratory conditions. Five concentrations of spores suspension from each of the four fungal isolates (1x10⁵, 1 x10⁶, 1x10⁷, 1x10⁸ and 1x10⁹ conidia / ml) were used against newly hatched larvae of S. littoralis pest. The results showed that the percentage mortality of the larvae increased with increasing concentrations of tested pathogens. The median time of mortality decreased as the spores concentration increased. Also, the isolate B. bassiana was the most effective against S. littoralis larvae at different tested concentrations. B. bassiana at high concentration of 1.0x10⁹ revealed 88.5 % mortality within mean time to larval mortality 5.1 ± 1.9 days.

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Virulence of three local isolates of entomopathogenic fungi ; Beauveria bassiana (AUMC 9896), Lecanicillium antillanum ( = Verticillium antillanum) (AUMC 9905) and Paecilomyces lilacinus (AUMC 9897), as well as, Metarhizium anisopliae which isolated in Bio-insectcide' Production Unit, Plant Protection Research Institute were evaluated against Spodoptera littoralis larvae under laboratory conditions. Five concentrations of spores suspension from each of the four fungal isolates (1x10⁵, 1 x10⁶, 1x10⁷, 1x10⁸ and 1x10⁹ conidia / ml) were used against newly hatched larvae of S. littoralis pest. The results showed that the percentage mortality of the larvae increased with increasing concentrations of tested pathogens. The median time of mortality decreased as the spores concentration increased. Also, the isolate B. bassiana was the most effective against S. littoralis larvae at different tested concentrations. B. bassiana at high concentration of 1.0x10⁹ revealed 88.5 % mortality within mean time to larval mortality 5.1 ± 1.9 days.

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