Synnemata Production by Isaria tenuipes using Colored Cocoon Silkworm, Golden Silk

This study was conducted to test the use of colored cocoon silkworm, Golden Silk, as a host for the fruiting body production of Cordyceps mushroom. Golden Silk variety had a shorter larval period than Yangwonjam at 25.3℃ and 78.5% RH: The average larval period of the Golden Silk was 24 days and 7 hr...

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Bibliographic Details
Published in:International Journal of Industrial Entomology 2011, 22(1), , pp.1-4
Main Authors: Hong, I.P., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Kang, P.D., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Kim, K.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Lee, M.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Choi, Y.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Kim, N.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Kim, H.K., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Nam, S.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Lee, K.G., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
Format: Article
Language:English
Subjects:
BOMBYX MORI
Golden Silk
Isaria tenuipes
PULVERISATION
PULVERIZACION
SPRAYING
Synnemata
농학
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Summary:This study was conducted to test the use of colored cocoon silkworm, Golden Silk, as a host for the fruiting body production of Cordyceps mushroom. Golden Silk variety had a shorter larval period than Yangwonjam at 25.3℃ and 78.5% RH: The average larval period of the Golden Silk was 24 days and 7 hr, and that of the Yangwonjam was 24 days and 15 hr. In the infection test of I. tenuipes on silkworm, the larval period of normal silkworms was longer than the silkworms inoculated with I. tenuipes in both Golden Silk and Yangwonjam. The pupae survival percentage of Golden Silk was 94.4%, whereas it was 91.9% in Yangwonjam. Golden Silk had a higher pupation rate than Yangwonjam. The pupation rate of normal silkworms was about 5% higher than that of silkworms inoculated with I. tenuipes. Infection rate of I. tenuipes into larvae of 5th instar newly exuviated silkworm was 93.8% in Golden Silk, and 96.9% in Yangwonjam. Synnemata production of I. tenuipes was better in Yangwonjam with an incidence rate of 99.8% than Golden Silk with 98.6%. The average synnemata weight of Golden Silk was 1.12 g and that of Yangwonjam 1.29 g. Golden Silk had a lower synnemata weight than Yangwonjam. But no significant difference was observed in synnemata weight varieties. The synnemata of I. tenuipes produced on pupae were white or milky-white in color, and similar in shape and color to wild synnemata collected in Korea.
ISSN:1598-3579
2586-4785
DOI:10.7852/ijie.2011.22.1.1