Breeding of biparental sex-limited larval marking yellow cocoon variety "Hanbyeolnue"

All of silkworm varieties reared in farmhouses are first generation hybrids, for the production of these hybrid silkworms precise and labor-saving sex discrimination is necessary. The new variety “Hanbyeolnue” is biparental sex-limited larval marking yellow cocoon variety which was bred from biparental sex-limited strain of Japanese originated Jam 319 and Chinese originated Jam 320. Productivity test of Hanbyeolnue in 2015 showed high healthiness and short larval period. The Hanbyeolnue was evaluated as an excellent variety which can be utilized for special purpose silkworm such as male pupae or Cordyceps production. et al ., 2000) , Hansaengjam(Kang et al ., 2011) and Dodamnue, and sex-limited biparental yellow cocoon variety Hwangbojam(Kang et al ., 2013) were developed by NAAS, RDA and being supplied to farmhouses. To increase the sex discrimination efficiency, the biparental sex-limited larval marking yellow cocoon variety was developed to integrate advantage of each variety. The Hanbyeolnue designated as a recommended silkworm variety was bred from sex-limited larval marking yellow cocoon variety parent and it is superior to biparental sex-limited larval marking varieties and biparental sex-limited yellow cocoon varieties in practical sex discrimination efficiency. This variety can be utilized for producing functional material which can Abstract