关键词: 家蚕, 药用植物, 隔离剂

Abstract:

In order to find a kind of environment-friendly and disease preventive isolation agent, this experiment adopt the common medicinal plants in Yunnan mountainous areas: eucalyptus leaves, maxi leaves, pine needles as isolation agents and contrast with coke bran, the commonly used isolation agent for silkworm. Related factors affecting the fifth instar silkworm growth, such as eating mulberry condition, silkworm seat moisture absorption ability, antiviral ability, and cocoon quality were measured. The results indicated that these selected medicinal plants had no bad effect on silkworm eating mulberry leaves. When the silkworm grew to the late age of the fifth instar, the moisture absorption capacity differed obviously (P<0.05) among different treatment groups, while the same treatment group of moisture change was not obvious but significant with contrast (P<0.05). The maxi leaf group had the highest survival rate after 7 days of BmNPV infection. Compared with the coke bran, cocoon weight and cocoon shell rate of various medicinal plants had no significant differences (P＞0.05). Above results shew that these common medicinal plants had no bad side-effects on silkworm, among them Artemisia argyi could replace coke bran, as a new measure for isolation in silkworm production. It is of great significance to prevent and control silkworm diseases, and reduce environment pollution.

Key words: silkworm, medicinal plants, isolation agent