摘要：Twenty-six bivoltine silkworm (Bombyx mori L.) genotypes were tested along with two check varieties (NB4D2 and SH6) for their performance in respect of 14 metric traits during spring (E1) and summer (E2) seasons. No genotype displayed significantly superior performance vis-à-vis check breeds in all the metric traits under study. However, several genotypes registered higher performance in several subsets of traits. The breeds J2M, A and NCD appear to have potential for commercial exploitation during spring rearing season (E1), whereas, the breeds CSGRC-5, New Race, JA1 and Jam 21 during summer rearing season (E2). The genotypes Sheiki-II, Pampore-5, J122, Meigitsu, 14M, NJ3, NB18, CSR2 and CSR4 manifested appreciable performance in both spring (E1) and summer (E2) season.
