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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Characterization of granulosis viruses of sugarcane early shoot borer, Chilo infuscatellus (Snell.) and internode borer, Chilo sacchariphagus indicus (Kapur)
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Characterization of granulosis viruses of sugarcane early shoot borer, Chilo infuscatellus (Snell.) and internode borer, Chilo sacchariphagus indicus (Kapur)

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摘要

A study was undertaken to characterize the granulosis viruses (GVs) of early shoot borer, Chilo infuscatellus (Snell.) (Crambidae: Lepidoptera) and internode borer, Chilo sacchariphagus indicus (Kapur) (Lepidoptera: Crambidae) in sugarcane. Scanning electron photomicrographs revealed ovo-cylindrical occlusion bodies (OBs) of GVs in early shoot and internode borers with an average size of 425.03 and 230.21 nm, 387.64 and 208.68 nm in length and breadth respectively. Transmission electron photomicrographs also showed ovo-cylindrical OBs embedded with a rod-shaped virion. The average length and breadth of the virion in the OB was 271.0 x 52.6 nm, 257.0 x 50.2 nm for early shoot and internode borer GVs respectively. Toxicity studies with the respective GVs revealed lethal concentration values of 4.38, 4.61, 6.89 OBs/mm(2) and 1.85, 135.43, 8045.27 OBs/mm(2) to second, third and fourth larval instars of Chilo infuscatellus granulosis virus (ChinGV) and Chilo sacchariphagus indicus granulosis virus (ChsaGV) respectively.

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