GB7412-2003

Plant quarantine rules for wheat seeds in producing areas

小麦种子产地检疫规程

GB 7412-2003 は現行の中国強制国家規格です：Plant quarantine rules for wheat seeds in producing areas。業界：食品。テーマ：試験方法。施行日：2003年11月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

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.

技術要求

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.

試験方法

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.

よくある質問

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.

適用のヒント

種別: 試験方法
CCS: B21
ICS: 65.020.40
所管部門: Ministry of Agriculture and Rural Affairs
技術委員会: Ministry of Agriculture and Rural Affairs