EFFECT OF PREGNANT MARE SERUM GONADOTROPIN (PMSG) ON THE ECONOMIC TRAITS OF SILKWORM, BOMBYX MORI L.
P. PUSHPA RANI *
ADRT UNIT, INSTITUTE FORSOCIAL AND ECONOMIC CHANGE, NAGARBHAVI, BANGALORE-560072, INDIA.
*Author to whom correspondence should be addressed.
Abstract
Effect of pregnant mare serum gonadotropin (PSMG) on the biology of silkworm, Bombyx mori. L was studied. Single dose of (5u g/ml) of PMSG was topically applied at 48 hours of fifth instar silkworm larvae. Observations were made to know the effect of treatment on bio-assay of various economic charaters of silkworm. The result indicated that the application of PMSG has improved various economic characters like larval weight, total larval duration, cocoon weight, cocoon shell weight pupal weight, cocoon shell ratio, filament length, denier, eclosion period and fecundity. The significance of PMSG in the development of silkworm with the concomitant appraisal of economic characters is discussed.