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KMID : 0545120020120010145
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Journal of Microbiology and Biotechnology
2002 Volume.12 No. 1 p.145 ~ p.148
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Selection of a Highly Virulent Verticillium lecanii Strain Against Trialeurodes vaporariorum at Various Temperatures
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LEE, MINHO
YOON, CHEOL-SIK/YUN, TAEYU/KIM, HONG-SUN/YOO, JAI-KI
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Abstract
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The virulence of five Verticillium lecanii strains against greenhouse whiteflies, Trialeurodes vaporariorum, was tested at various temperatures as a major environmental factor. Strain CS-626 was found to be the most durable strain at a broad temperature range, and highly virulent against greenhouse whiteflies in a detached-leaf bioassay. In a tomato plant pot experiment, the LT_50 and LC_50 of the CS-626 strain were 6.2 days and 2.3×10 exp (6) conidia/ml, respectively. The optimal concentration of CS-626 for successful infection was 1×10 exp (6) conidia/ml. These results indicate that the CS-626 strain of Verticillium lecanii has a strong potential for effectively controlling greenhouse whiteflies.
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