Breeding of a Natural Green Cocoon Quaternary Hybrid Combination Xiangcailu No. 1 for Spring Rearing

Unfortunately, due to the fact that the basic varieties of natural colored cocoons are generally characterized by small individuals, weak body, thin cocoon shell, poor silk quality and low practicality, directly use of the natural resources results in low yield, short silk length and low efficiency....

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Published inAgricultural biotechnology (Pawtucket, R.I.) Vol. 8; no. 4; pp. 14 - 25
Main Authors Xue, Hong, Ai, Junwen, Sima, Yanghu, He, Xingjian, Liu, Changwen, Zheng, Ying, Liu, Yong, Tang, Yun
Format Journal Article
LanguageEnglish
Published Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.08.2019
Subjects
Ability tests
Agricultural research
Breeding
Cocoons
Fast food
Flavonoids
Genetic transformation
Germplasm
Larvae
Moisture absorption
Molting
Natural resources
Phototaxis
Quality standards
Quarantine
Quaternary
R&D
Research & development
Research centers
Science
Silk
Silkworms
Standardization
Supervision
Textiles
Beijing China
China
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Summary:Unfortunately, due to the fact that the basic varieties of natural colored cocoons are generally characterized by small individuals, weak body, thin cocoon shell, poor silk quality and low practicality, directly use of the natural resources results in low yield, short silk length and low efficiency. [...]it is necessary to make innovative and practical transformation of this type of resources'2'. The newly hatched larvae are darle brown, and the newly hatched larvae and young silkworms are characterized with tendency to density and phototaxis; Each grown silkworm has a strong bluish white body with pale marking, and has the characteristics of uniform molting and fast food taking; and the silkworms get mature uniformly, urinae more, and like cocooning in the upper layer of the frame, which is in the shape of a short ellipsoid, medium to thin in size of wénkle, in green color. The main blood line of this variety is the national designated control variety Jingsong X Haoyue for spring rearing, which was subjected to intervening crossing with medium silic amount race improved 21K or improved 22K which is strong to rear easily, thus ensuring the introduction of the natural green cocoon control gene into the basic materials when integrating the characteristics of high yield, good quality and strong body of multiple parental materials. Received : March 5 , 2019 Accepted: May 17, 2019 Supported by Earmarked Fund for China Agriculture Research System ( CARS18); Hunan Provincial Science and Technology Support Program (2013 NK 3071) ; Natural Science Foundation of Hunan Province ( 2017JJ2137) ; Siltiworm Germplasm Resources Multi-element Application Research and Development Innovation Team (2017XC01).
ISSN:2164-4993