Genetic Resistance of the Silkworm, Bombyx Mori L., to an Infection of a Flacherie Virus

Abstract

Genetic resistance of the silkworm to the flacherie-virus infection was studied using several Japanese and Chinese races as well as their hybrids. the results obtained are summarized as follows: 1. Resistance to the viral infection is a recessive genetic character which is probably controlled by a major gene. 2. Hybrid vigor or heterosis in the resistance could not be entirely observed among the tested hybrids. 3. It was also found that the selection of a resistant strain could be readily accomplished by the batch selection method for several generations. © 1968, The Japanese Society of Sericultural Science. All rights reserved.