Method of using silkworm local native varieties to breed trimolter new material

• Main Authors: LIU JUNFENG, CHEN YI'AN, XIAO WENFU, LIU BINBIN, ZHOU ANLIAN, ZHANG YOUHONG, XIAO JINSHU, ZOU BANGXING
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2018
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; NEW BREEDS OF ANIMALS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; TRAPPING

The invention belongs to the technical field of silkworm cultivation, and particularly discloses a method of using silkworm local native varieties to breed a trimolter new material. The method includes: selecting a tetramolter variety as a female parent and a strong trimolter local native variety as a male parent; guiding strong trimolting gene of the local native variety into the tetramolter variety. Only trimolting characteristic of the trimolter new material bred by the method comes from the local native variety, other economic characters like larva stripe, cocoon type, cocoon color and silk quality are all from the tetramolter variety, trimolting rate reaches 100%, trimolting performance is stable, and economic characters are excellent. By the method, directional selection of excellenteconomic characters belonging to tetramolter can be realized while trimolting selection is performed, so that the trimolter new material bred by the method is high in genotype homozygosity and has the economic characters tha