Journal of
Evolutionary Biology Research

  • Abbreviation: J. Evol. Biol. Res.
  • Language: English
  • ISSN: 2141-6583
  • DOI: 10.5897/JEBR
  • Start Year: 2009
  • Published Articles: 32

Full Length Research Paper

Improvement in cocoon yield induced by phytojuvenoid on the multivoltine mulberry silkworm (Bombyx mori Linn.)

Roli Srivastava
  • Roli Srivastava
  • Silkworm Laboratory, Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur-273009, India.
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V. B. Upadhyay
  • V. B. Upadhyay
  • Silkworm Laboratory, Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur-273009, India.
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  •  Received: 09 February 2014
  •  Accepted: 02 June 2014
  •  Published: 30 January 2015

Abstract

Impact of phytojuvenoid on commercial parameters in Bombyx mori, a monophagous insect, was studied. The variation in the phytojuvenoid concentration significantly influenced the length of cocoon and the number of larval treatment did not cause significant influence on the length of cocoon of B. mori. The length of cocoon increased from 2.88 cm (control) to the maximum level of 3.65 cm in 30% phytojuvenoid concentration - triple treated larvae and the volume of cocoon increased with increasing the number of larval treatment from single to triple in 10, 20 and in 30% phytojuvenoid concentration and the volume was highest (3.48 ml) in 30% phytojuvenoid concentration at triple treated larvae. The results show that topical application of bioactive phytojuvenoid improved the commercial parameters in B. mori.

 

Key words: Phytojuvenoid, silk producing potential, larvae, Bombyx mori, larval treatment.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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