Development of the silk glands of the silk worms (Bombyx mori L.) influenced by the different types of fertilization in mulberry

Authors

  • Roque Takahashi Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Carminda da Cruz Landim Universidade Estadual Paulista, Rio Claro, SP
  • Sergio do Nascimento Kronka Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP

Keywords:

silk gland, fertilization, mulberry

Abstract

The present research was conducted in the Setor de Sericicultura of the Faculdade de Ciências Agrárias e Veterinárias - Campus de Jaboticabal - UNESP during March-April of 1987 with the purpose of determining the effects of different types fertilization mulberry in the development of the silkglands of the silkworms in the course of 5th ínstar. The following treatments were studied: control (without fertilization); organic fertilization; chemical fertilization in the soil; and foliar fertilization. The parameters obtained by the direct measurement of the silkglands were: lenght of the silkgland; diameter of the middle portion; diameter of the posterior portion; and weight of the silkglands. In the study of the glandular section the following parameters were determined: area of the secretory layer and area of the storage region of the middle portion, and area of the secretory layer and area of the storage region of the posterior portion. In the results it was observed major development of the silkglands of the larvae of the silkworms feed with leaves from plants receiving organic fertilization and with small inferiority the chemical fertilization in the soil. The foliar fertilization surpassed the control in only some parameters.

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Published

2014-01-14

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Development of the silk glands of the silk worms (Bombyx mori L.) influenced by the different types of fertilization in mulberry. (2014). Bulletin of Animal Husbandry, 47(2), 121-125. http://bia.iz.sp.gov.br/index.php/bia/article/view/897

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