Low-cost interlinear silkworm hybrid breeding method

Abstract

The interlinear silkworm hybrid breeding method includes high hatchability non-meiotic female parthenogenesis to propagate the female parent as hologynic filial generation for silkworm hybrid, egg color limiting process to propagate the male parent as holandric filial generation for silkworm hybrid ,and hybridization with the two parents to produce interlinear silkworm hybrid. The present invention has low hybrid breeding cost to raise high-quality new silkworm hybrid with high feed efficiency.

Description

technical field [0001] The invention relates to a single-cross seed production method of silkworm with low seed production cost. Background technique [0002] In production, all silkworms use hybrids. Because most of the original sex of the current production species cannot be controlled artificially, and both parents of the hybrids have male and female individuals, in production, both reciprocal crosses of the first generation of hybrids must be used. This not only cannot meet the requirement of raising more female silkworms but less male silkworms in silkworm breeding farms, and increases the cost of seed production, but also makes it impossible to use the principle of silkworm sex-linked genetics in silkworm breeding, and set different breeding priorities for the parents of hybrids. To simplify the breeding objectives. Moreover, both reciprocal and reciprocal crosses of the hybrids must be utilized, and the character characteristics of both ...

AI Technical Summary

Problems solved by technology

Under natural conditions, the incidence of non-meiotic parthenogenesis is extremely low, and artificial physical stimulation of unfertilized eggs can increase the incidence of parthenogenesis, but the artificial incidence of general conventional varieties is also low , of no practical value

The silkworm egg color-limited variety is a special silkworm variety whose egg color is controlled by genes. Generally, the female eggs are black eggs, and the male eggs are white eggs. At present, this variety is preserved as a germplasm resource of silkworms because of its poor economic characteristics. , only used in genetic research, except for the technology of raising male silkworms, there is no application example in the production of common species