Unlock instant, AI-driven research and patent intelligence for your innovation.

Two-stage continuous backcross method for breeding vavous moth of bombyx mori

A technology of backcross breeding and silkworm, which is applied in animal husbandry and other fields, can solve the problems of cumbersome operation, slow progress, and difficulty in practical use, and achieve the effects of preventing loss, speeding up breeding progress, and improving the thoroughness of hybridization

Inactive Publication Date: 2002-09-18
SERICULTURAL RES INST ANHUI ACADEMY OF AGRI SCI
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the law of Mendelian inheritance, if hybridization and self-segregation are used, individuals containing the target gene are selected for hybridization and re-segregation... It is also possible to introduce recessive genes, but this method is cumbersome to operate, slow in progress, poor in effect, and difficult to be practical

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] Select the white moth species of the Chinese system with excellent comprehensive economic properties in spring or summer and autumn as parents, and cross them with individuals of gray black moths that contain recessive gray black moth genes. on behalf of the white moth). Use the F1 white moth to backcross once with the parent white moth, raise a generation of backcross silkworms, and self-cross after cocooning and moth emergence. This is the first continuous backcrossing. The silkworm eggs produced after selfing are bred and cocooned, and 1 / 8 gray-black moths are separated, of which male and female are divided in half. The separated gray-black moths are then crossed with parent white moths to raise offspring silkworms until cocoons are formed. 1. After the moths emerge, use the offspring moths containing the recessive gray-black moth gene (phenotype is white moth) to backcross once with the parent white moth, then raise and cocoon, separate after the moths are self-cros...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A two-phase continuous backcross method for breeding new variety of bombyx mori by crossing with ravous moth includes crossing between white moth and ravous moth, raising, obtaining cocoon and in turn white moth F1, backcrossing with practical white moth, selfing to obtain silkworm seeds, raising, botaining coccon, separating 1 / 8 ravous moth, crossing with practical white moth, backcrossing, selfing, separating and screening. Its cross rate can reach 100%.

Description

technical field [0001] The invention relates to a method for selecting and breeding silkworm varieties, in particular to a two-stage continuous backcross breeding method for Bombyx mori. Background technique [0002] At present, the selection and breeding of silkworm species is usually based on hybrid breeding, and there are also mutation breeding by means of radiation and laser. Hybrid breeding can put a specific gene in silkworm into practical use, that is, introduce the special traits of the species containing the specific gene, not only the comprehensive economic traits can reach the practical level, but also its economic value can be further improved. If the special character is controlled by a dominant gene (that is, a specific gene is a dominant gene), then the hybrid breeding can be realized by continuous backcrossing. Generally, this specific gene can be transferred (introduced) to the Among the practical varieties. If the special trait is controlled by a recessiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/04
Inventor 李圣孙家羿黄德辉杜经元
Owner SERICULTURAL RES INST ANHUI ACADEMY OF AGRI SCI