Journal of Innovative Agriculture | Volume 13 Issue 1 | Pages: 1-6 | Doi : 10.37446/jinagri/rsa/13.1.2026.1-6

Research Article

OPEN ACCESS | Published on : 31-Mar-2026

Performance of Agrahayani grainage using P1 bivoltine seed cocoons from Southern India

• Vijay S
• Silkworm Seed Production Centre, NSSO, CSB, D B Pur, West Bengal-733132, India.

Harishkumar J
• Silkworm Seed Production Centre, NSSO, CSB, K R Nagr, Karnataka-571602, India.

Arun Kumar M
• Silkworm Seed Production Centre, NSSO, CSB, Jorhat, Assam-785005, India.

Rani Kumar Sajane
• P3 Basic Seed Farm, NSSO, CSB, Ambarifalakata, West Bengal-735135, India.

Manthira Moorthy S
• National Silkworm Seed Organization, CSB, Bangalore, Karnataka-560068, India.

Abstract

Background: Silkworm seed plays an important role; since sericulture is a cash-generating activity, disease-free eggs are very important for the success of silkworm rearing. Production of disease-free crossbreed silkworm seed during the Agrahayani crop is very important because it is a crucial crop in West Bengal.

Methods: Grainage performance for cross breeds such as pupation rate, cocoons per kg, DFLs obtained, total egg weight, cocoon DFLs ratio, pairing (%) and egg recovery was calculated as per the SOP.

Results: The present study on grainage performance during Agrahayani crop using the P1 bivoltine seed cocoons from South India showed that, egg recovery (g/kg) was high in N x (SK6 x SK7) with 50.37g /kg of seed cocoons followed by N x FC2 of 49.04 g/kg. The cocoon:DFLs ratio was recorded 3.09:1 in N x (SK6 x SK7), 2.63 in N x FC2 and 2.45:1 in N x FC1.

Conclusion: This result has proved that P1 bivoltine seed cocoons from South India may be utilised for the grainage production in Agrahayani crop in upcoming years.

Keywords

grainage, agrahayani, bivoltine, nistari, performance, sericulture, silkworm

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