Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Differential Digestive Amylase Activity in Silkworm, Bombyx mori L. in Relation with Biological and Yield Traits 258

Volume : 98
Issue: Jul-sep
Pages: 258 - 262
Published: May 17, 2023
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Abstract


A study was undertaken to ascertain the variability in digestive amylase activity in different mulberry silkworm races. PA12 recorded the highest larval and cocoon weight (1.52 g and 0.68 g) in a pool of multivoltines tested and CSR2 recorded the highest (3.08 g and 2.49 g) among bivoltines tested. Among multivoltines, Nistari (1722.5 μg) and CB5 (1648.8 μg) recorded higher amylase activity and Tamil Nadu White recorded the least. Among bivoltines, the amylase activity was significantly higher in PAM101 (184.03μg) and NB4D2 (180.42μg). CSR19, CC1, NB7 and CSR18 were on par and showed low digestive amylase activity. Amylase activity in digestive juice was about 10 to 15 fold higher in multivoltines than bivoltines. Positive significant correlation (P=0.01) was recorded between digestive amylase activity and effective rate of rearing (0.812). Negative correlation was recorded between amylase activity, and biological and yield related traits of silkworm, Bombyx mori L.

DOI
Pages
258 - 262
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Digestive amylase Bombyx mori multivoltine bivoltine ERR.
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