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GB/T 45552-2025Technical specification for Bombyx mori genetic resource survey (English PDF)

家蚕遗传资源调查技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

November 1, 2025

Scope

GB/T 45552-2025 is the English-translated version of 家蚕遗传资源调查技术规范.

GB/T 45552-2025 is the Chinese national standard covering surveying the silkworm strains a country holds — which populations are to be surveyed, the local, improved and introduced varieties and the monovoltine, bivoltine and polyvoltine types they are sorted into, the characters recorded for each, the survey method and its contents, and the records and archives that make the result a resource list rather than a one-off count. First edition, one of the four surveys that together cover livestock, poultry, bees and silkworms. Under the Ministry of Agriculture and Rural Affairs. In force from 1 November 2025. Issued on 25 April 2025, it has been in force since 1 November 2025.

Document preview — GB/T 45552-2025

National Standard of the People's Republic of China

ICS: 65.020.30
Classification: B 47

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 local variety
3.2 Improved variety
3.3 introduced variety
3.4 Monovoltine variety
3.5 Bivoltine variety
3.6 polyvoltine variety

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

GB/T 45552 "Technical Specifications for Investigation of Silkworm Genetic Resources" and GB/T 27534 "Technical Specifications for Investigation of Livestock and Poultry Genetic Resources", GB/T 45553 The Technical Specifications for the Investigation of the Genetic Resources of Tussah Silkworm and GB/T 45550 Technical Specifications for the Investigation of the Genetic Resources of Honeybees together constitute the technical standards for the investigation of the genetic resources of livestock, bees and silkworms.

The basis for genetic resource surveys.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China.

This document is under the jurisdiction of the National Technical Committee on Animal Husbandry Standardization (SAC/TC 274).

This document was drafted by: National Animal Husbandry Station, Sericulture Research Institute of Chinese Academy of Agricultural Sciences, Jiangsu University of Science and Technology, Southwest University, Guangxi Zhuang Autonomous Region Autonomous Region Sericulture Technology Extension Station, Zhejiang Academy of Agricultural Sciences, Sericulture Research Institute of Anhui Academy of Agricultural Sciences, Sericulture Research Institute of Sichuan Academy of Agricultural Sciences Institute (Institute of Special Economic Plants and Animals, Sichuan Academy of Agricultural Sciences), Guangdong Sericulture Technology Promotion Center, Shandong Guangtong Silkworm Seed Co., Ltd., Yunnan Academy of Agricultural Sciences Sericulture and Bee Research Institute, Hubei Academy of Agricultural Sciences Economic Crops Research Institute, Xinjiang Uygur Autonomous Region Sericulture Science Institute Development Center, Guangxi Zhuang Autonomous Region Animal Husbandry and Poultry Breeding Station.

The main drafters of this document are: Han Xu, Shen Xingjia, Lu Cheng, Xue Ming, Cheng Wenqiang, Qian Heying, Zhao Qiaoling, Chen Tao, Wang Meixian, Li Gang, Zhang Youhong, Wang Yongqiang, Pan Zhixin, Huang Dehui, Li Linshan, Fang Dewen, Dong Zhanpeng, Zhu Juan, Wu Fan, Lu Hong, and Liu Ruixin.

Technical Specifications for Investigation of Silkworm Genetic Resources

1 Scope

This document specifies the objects and methods of silkworm genetic resources survey, survey contents, and requirements for record and archive management. Check method.

This document is applicable to the investigation of silkworm genetic resources.

2 Normative references

GB/T 9111

NY/T 1093

NY/T 1732

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 local variety

A variety of silkworm that has been bred and passed down through long-term artificial and natural selection under natural conditions in a certain region of China.

3.2 Improved variety

Silkworm varieties bred through pure line separation, hybrid fixation, systematic selection and molecular breeding techniques and methods.

3.3 introduced variety

Silkworm varieties introduced from abroad.

3.4 Monovoltine variety

Under natural conditions in temperate zones, there is only one generation of silkworm species in a year.

3.5 Bivoltine variety

A species of silkworm that produces two generations in one year under natural conditions in temperate zones.

3.6 polyvoltine variety

A silkworm variety that produces three or more generations in a year under tropical or subtropical natural conditions.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 9111The methods of mulberry silkworm dried cocoons

NY/T 1093 · NY/T 1732

Editions of GB/T 45552

Edition	Title	Revision	Status
GB/T 45552-2025	Technical specification for Bombyx mori genetic resource survey	current edition	Current

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