Special Section: Recent Advances in Silkworm Biology
نویسنده
چکیده
The silkworm, Bombyx mori is infected by a number of viruses: Bombyx mori nuclear polyhedrosis virus (BmNPV), cytoplasmic polyhedrosis virus (CPV), infectious flacherie virus (IFV) and densonucleosis virus (DNV). Except DNV, resistance of silkworms to the virus is controlled by polygenes. Serologically, two DNV types, DNV-1 and DNV-2 are identified. The non-susceptibility to DNV types is conferred by two recessive genes, nsd-1 and nsd-2 and one dominant gene, Nid-1. Various selection and hybridization schemes to develop silkworm strains and hybrids resistant to viral diseases are discussed.
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