Influence new varieties mulberry on the viability caterpillars and the performance of silkworms cocoons

In this article presented the study results of the nutritional value of mulberry Morus alba L. new breeding numbers. Based on the results of the testing of the Ipakchi 1 × Ipakchi 2 silkworm hybrid in 2015-2017, a direct dependence of the caterpillars' viability and the cocoons performance from the mulberry variety is established. Among the tested breeding numbers, high indices were shown by no. 3-02 and no. 7-02. The viability of caterpillars in these variants was 90.6-92.9%, the yield of cocoons from one box of caterpillars was 110.9-125.5% compared to the control variant. According to the results of the research, breeding numbers no. 3-02 and no. 7-02 were recommended for large-scale breeding in Uzbekistan.