Author(s): B. K. Neelaboina, Shivkumar, R. Kiran and S. Singh

Abstract: The silkworm rearing was conducted at Central Sericultural Research and Training Institute (CSR&TI), Central Silk Board, Pampore, Jammu & Kashmir (J&K) during spring (May-June) and summer (July-August), 2019 to evaluate twenty four bivoltine silkworm foundation crosses (FC) along with two controls. The silkworm rearing was conducted by adopting a standard method coupled with uniformed laboratory conditions. Evaluation index (E.I) values indicates that three constricted FC viz., SK-6 × SK-7, Pam-117 × APS-4, Pam-117 × SK-7 along with five oval foundation crosses viz., CSR-27 × CSR-50, CSR-27 × Pam-114, CSR-50 × Pam-114, Pam-114 × CSR-27 and Pam-114 × CSR-50 performed well in both spring and summer seasons. In the case of constricted FC, SK-6 × Pam-117 & SK-7 × Pam-117 emerged as spring specific and SK6 × APS-4 and SK-7 × SK-6 as summer specific foundation crosses. Among oval FC, APS-5 × Pam-114 and APS-5 × CSR-27 emerged as spring and summer specific foundation crosses respectively.

DOI: 10.22271/09746315.2022.v18.i1.1543

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