Intensity of egg laying dynamics by butterflies in the first day of the caterpillar’s life’s period and their relationship with the silkworm selection characteristics

Abstract The research is devoted to the study of genetic parameters a less studied trait - intensity egg laying on first day female silkworm butterflies. Based experiments conducted in promising lines Line 27 and 28, it was found that variability this Cv = 15,0-15,3%, heritability coefficient h2 0,321-0,340. Also, for time, close positive correlation established between leading reproductive signs. A (rp 0,432-0,692) growth rate caterpillars their productivity reflected yield cocoons. At same fast-growing are susceptible diseases.