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Selection of Entomopathogenic Fungi for Aphid Control

Paper ID Volume ID Publish Year Pages File Format Full-Text
22128 43255 2007 8 PDF Available
Title
Selection of Entomopathogenic Fungi for Aphid Control
Abstract

Twelve strains of entomopathogenic fungi such as Lecanicillium lecanii, Paecilomyces farinosus, Beauveria bassiana, Metarhizium anisopliae, Cordyceps scarabaeicola, and Nomuraea rileyi were screened for aphid control. At 25°C and 75% relative humidity (RH), among tested entomopathogenic fungi, L. lecanii 41185 showed the highest virulent pathogenicity for both Myzus persicae and Aphis gossypii, and their control values were both nearly 100% 5 and 2 d after treatment, respectively. Moreover, at an RH of 45% and in a wide temperature range (20–30°C), L. lecanii 41185 also exhibited the highest virulence to M. persicae. The control value of M. persicae and the 50% lethal time (LT50) decreased significantly as the applied conidial concentration increased. The 50% lethal concentration (LC50) of the conidial suspension of this fungus was determined to be 6.55×105 conidia/ml. The control values of M. persicae resulting from the application of 1×107 and 1×108 conidia/ml were nearly the same and were significantly higher than that of 1×106 conidia/ml. The tested entomopathogenic fungi grew in a broad temperature range (15–30°C). Lecanicillium strains showed optimum growth at 25°C. The aerial conidia of Lecanicillium strains also could germinate in a broad temperature range (15–30°C) and L. lecanii 41185 was the only strain with conidial germination at 35°C.

Keywords
entomopathogenic fungi; aerial conidia; germination; vegetative growth; Myzus persicae; Aphis gossypii
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Selection of Entomopathogenic Fungi for Aphid Control
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 104, Issue 6, December 2007, Pages 498–505
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us