GB7412-2003
Plant quarantine rules for wheat seeds in producing areas
小麦种子产地检疫规程
GB 7412-2003 is a current mandatory Chinese national standard for Plant quarantine rules for wheat seeds in producing areas. It appears in the Food compliance cluster with a testing methods focus and has an implementation date of Nov 1, 2003.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard is applicable to plant quarantine authorities and all entities or individuals engaged in the breeding and production of wheat seeds within China. It specifically regulates the quarantine of wheat seed production areas, covering the identification of quarantine pests, the production of healthy seeds, and the procedures for inspection and certification. It is mandatory for all domestic and foreign-invested seed breeding operations targeting the Chinese market. The standard replaces the previous version, GB 7412-1987, to adapt to changes in wheat production and pest occurrence.
Technical requirements
The standard specifies the categories of quarantine pests and regulated non-quarantine pests that affect wheat seeds. Key quarantine pests include *Tilletia controversa* (wheat dwarf bunt), *Mayetiola destructor* (Hessian fly), and *Lolium temulentum* (darnel). Regulated non-quarantine pests include common bunt pathogens, wheat nematodes, and take-all disease pathogens. For healthy seed production, the standard mandates strict site selection, requiring breeding fields to be located in pest-free areas or areas with proper isolation. Seed disinfection treatments are specified based on the targeted pests, utilizing chemical or physical treatments to ensure seed health. The standard outlines comprehensive quarantine measures for breeding fields, including crop rotation, isolation from other wheat fields, and the prohibition of using contaminated fertilizers. Any field with a severe outbreak of quarantine pests is strictly prohibited from being used for seed production. Harvested seeds must be separately collected, threshed, and stored to prevent contamination.
Testing methods
The standard establishes a two-tier inspection system: field surveys and laboratory testing. Field surveys are conducted during specific growth stages (jointing, heading, and milk-ripe stages) to visually identify pest symptoms. Laboratory testing involves sieve analysis, microscopic examination, and pathogen isolation and culture techniques. Specific methods include washing tests for spore morphology, fluorescence microscopy for identifying *Tilletia controversa*, and spore germination tests to differentiate bunt species.
FAQs
What products are regulated under GB 7412-2003?
GB 7412-2003 regulates wheat seeds produced in China. It applies to all individuals and entities involved in the breeding and production of wheat seeds, ensuring they meet plant quarantine requirements before being certified for use.
Are there any updates from the previous version of GB 7412-2003?
Yes, GB 7412-2003 replaces GB 7412-1987. The updated version introduces new sampling methods for seeds, isolation and culture techniques for *Gaeumannomyces graminis* (take-all disease), fluorescence microscopy and spore germination tests for *Tilletia controversa*, and morphological identification methods for the Hessian fly.
What happens if a quarantine pest is found during inspection?
If a quarantine pest listed in the standard is found during field surveys or laboratory testing, the Plant Quarantine Certificate will not be issued. The seeds may only be used locally under supervision after treatment, and the affected field is prohibited from being used for future seed breeding.
The summary above provides a high-level overview of GB 7412-2003. To ensure complete compliance for your wheat seed products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 7412-2003 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Method
- CCS
- B21
- ICS
- 65.020.40
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- Ministry of Agriculture and Rural Affairs