Genetical analysis on the nonsusceptibility to densonucleosis virus in the silkworm bombyx mori
Eguchi, R.; Ninaki, O.; Hara, W.
Journal of Sericultural Science of Japan 60(5): 384-389
In the silkworm, Bombyx mori, it was reported that some strains were not infected with the densonucleosis virus type-1 (DNV-1), and this resistance appeared to be controlled genetically. Genetic analysis showed that the resistance to the densonucleosis virus type 1 was controlled by a recessive gene. The gene was designated as "non-susceptibility to densonucleosis virus type-1" gene with the symbol nsd-1. The nsd-1 gene was located at the position 8.3 on the twenty-first chromosome based on the three point analysis and the sequence of the genes was rb, nsd-1, Sph. The homozygote of nsd-1 was completely resistant to the DNV-1.