The Results of Breeding Selection for Biological Characteristics in the Rocks of the Components of High-Yielding Hybrids of the Silkworm

Abstract

The article discusses the results and methods of selection aimed at improving the biological characteristics in the rocks-components of high-yielding silkworm hybrids. High biological indicators of the breed components of the new hybrids guarantee high heterosis for many economically valuable features. Improving the viability of caterpillars and silkworm cocoons of component species can be achieved by conducting a systematic selection at all stages of development of the silkworm. Selection and breeding selection include the method of ranking breeds on the basis of productivity, the method of traditional selection, and the method of selection based on motor activity. The use of multiple selection methods in the complex leads to increased viability of the caterpillars, weight, and silkiness of caterpillars, weight, and silkiness of cocoons of MG, Ipakchi 2, Ya-120, Chinese 108 breeds.