Scientific basis of creation of genetically controlled pure hybrids of mulberry silkworm (Bombyx mori L.)

In this article, it is investigated that mulberry silkworm breeds genetically adapted to dry, hot and dusty air, low humidity mulberry leaves, local microflora for the climatic conditions of Uzbekistan. Pure hybrids genetically modified by gender were created and scientific research was carried out, preparation of pure hybrids of mulberry silkworm scientific basis of creating genetically controlled pure hybrids of mulberry silkworm with high heterosis, capable of manifesting its genetic potential, is described. The development of new selection systems of sex-marked breeds that can compete with the current regionalized breeds and simplify the production process of mulberry silkworm eggs and reduce the cost of raw silk production, showing high heterosis in terms of biological parameters, 100% pure preparation, highly productive industrial hybrids were created. In this, the productivity indicators of the gene-marked breeds in the world collection of mulberry silkworms of the Research Institute of Sericulture of Uzbekistan were analyzed, some valuable indicators of the breeds selected for research were improved, the problem of butterflies not emerging from the cocoons in the gene-marked breeds was studied, pure hybrid combinations among the gene-marked breeds. It is scientifically based that the created, genetically controlled pure hybrids were tested in the laboratory and in production conditions, using the methods used in the selection and breeding works in all development periods of the dominant gene mulberry silkworm breeds, and the selection work was carried out based on movement activity, and new hybrids were created.