摘要
Because the male silkworm is economically superior to the female in sericulture,male-silkworm rearing through sex control is an interesting question. In order to rearmale silkworms only, a balanced lethal system was established in Japan and former U.S.S.R.by utilizing the recessive female sex-linked gene. Tajima et al. eliminated femaleindividuals by means of mechanical or manual methods according to the sex-limitedegg color or sex-limited larva marking. In addition, Xu An-ying et al. tried to ob-tain only male individuals by inducing androgenesis. However, the above methodscannot yet be utilized in sericulture production because of their harmful influenceson the vitality of silkworm larvas or the hatching rate.
基金
Natural Science Foundation of Guangdong Province, China.
