GB/T 45293-2025Code of practice for breeding female moths inspection of silkworm (Bombyx mori) (English PDF)
桑蚕种母蛾检验规程
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 28, 2025
Implementation date
September 1, 2025
Scope
GB/T 45293-2025 is the English-translated version of 桑蚕种母蛾检验规程.
GB/T 45293-2025 is the Chinese national standard covering checking mother moths for pebrine before their eggs become a season's silkworm crop — the bagging of every original moth and the sampling of the first-generation hybrids by production lot, the drying, the disinfection and cleaning, the examination of the moth groups for spores, the diseased moth rate and how the result is judged, and the report, since one infected mother contaminates every egg she lays. First edition, under the Ministry of Agriculture and Rural Affairs. In force from 1 September 2025. Issued on 28 February 2025, it has been in force since 1 September 2025.
Document preview — GB/T 45293-2025
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
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 breeding female moths
- 3.2 Rate of pebrine contaminated breeding female moths
- 4 Female moth samples
- 4.1 Bagworm
- 4.1.1 Original female moth
- 4.1.2 First-generation hybrid female moth
- 4.1.2.1 Division of inspection lots
- 4.1.2.2 Sampling of bagworms
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.
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 Sericulture Standardization Technical Committee (SAC/TC437).
This document was drafted by: Jiangsu University of Science and Technology, Sericulture Research Institute of Chinese Academy of Agricultural Sciences, Zhejiang Agricultural Technology Extension Center, Sichuan Sericulture Research Institute Industry Management Station, Guangdong Siyuan Group Co., Ltd., Guangxi Zhuang Autonomous Region Sericulture Technology Extension Station, Chongqing Sericulture Station, Jiangsu Province Silkworm Seed Institute of Silkworm Breeding, Sichuan Nanchong Silkworm Breeding Farm, Shandong Guangtong Silkworm Breeding Group Co., Ltd., Hubei Academy of Agricultural Sciences Economic Crops Research Institute, Jiangxi Economic Crops Institute of Animal Science, Characteristic Agriculture Management Station of Anhui Provincial Department of Agriculture and Rural Affairs, Hunan Sericulture Science Research Institute, and Jilin Sericulture Science Research Institute.
The main drafters of this document are: Chen Tao, Zhang Meirong, Zhu Chunqun, Hu Wenjuan, Lou Xia, Ma Luyun, Peng Lihong, Mo Yunxia, Li Hongyuan, Wang Xin, Du Guoliang, Fang Dewen, Wu Fan, Tang Bin, Wang Jianxia, Li Lirong, Wang Xianyan, Yao Xiaohui, Hou Qirui, Zhou Ying.
Inspection procedures for silkworm mother moths
1 Scope
This document establishes the inspection procedures for mulberry silkworm mother moths, and stipulates the bagging, drying, disinfection and cleaning, result determination and inspection of mulberry silkworm mother moths.
The report describes the corresponding inspection methods.
This document is applicable to the inspection of female moths used to produce mulberry silkworm stock and first-generation hybrids.
2 Normative references
GB/T 8170
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 breeding female moths
Female moths that produce the next generation of silkworms.
3.2 Rate of pebrine contaminated breeding female moths
The percentage of mother moths (groups) carrying microspores to the total number of mother moths in the seed production batch (stage).
Note. Abbreviated as diseased moth rate. In actual inspection, the mother moths are inspected according to the specified requirements and measured by the number of microparticle diseased moth groups detected.
4 Female moth samples
4.1 Bagworm
4.1.1 Original female moth
All original female moths shall be inspected. Original female moths shall be placed in a 28-grid paper moth box with serial numbers.
Production unit, variety name, batch, moth box number. The moth box number should be consistent with the silkworm seed number.
4.1.2 First-generation hybrid female moth
4.1.2.1 Division of inspection lots
Divide by seed production batches, or divide by seed production day (household) in the same seed production batch.
4.1.2.2 Sampling of bagworms
The first-generation hybrid female moths are sampled and inspected. The number of female moths (including seedlings) for scattered egg species and flat-attached species as specified in Table 1 and Table 2 are randomly selected.
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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
Editions of GB/T 45293
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 45293-2025 | Code of practice for breeding female moths inspection of silkworm (Bombyx mori.) | current edition | Current |
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