Appearance of biological and productivity indicators of foreign breeds and hybrids of <i>bombyx mori</i> l. propagated in seed enterprises in different conditions

At the global level, special attention is paid to care of mulberry silkworm Bombyx mori L. in different climatic conditions, adaptation monovoltine breeds and hybrids ecological regions, production high-quality raw silk that meets requirements international standard 2A, 3A, 4A. being directed. Today, creating a new generation improving technological properties cocoons materials obtained from them, determining effects various environmental factors objectively evaluating physical mechanical are considered as urgent problems on scale. Currently, some seeds, which not enough for farms our country, imported People's Republic China. The economic value these elite industrial hybrids, namely egg viability, worm length larval period, biological such silkworm, cocoon shell weight, yield, silkiness productivity fertile non-fertile cocoons. It scientifically based extent natural conditions regions Uzbekistan affect indicators percentage, dry weight cocoons, percentage defective