GB/T 43271-2023 in English

1. Background and significance of standard formulation

The current wood anatomical method can usually only identify to the 'genus' level, which is difficult to meet the needs of international trade law enforcement and domestic market supervision and management for wood 'species' level identification. The DNA barcode method provides a reliable technical basis for the accurate identification of wood.

2. Comparison of standard frameworks

3. Key technologies and instruments

4. Experimental steps and judgment methods

The experimental steps include sample collection, DNA extraction, PCR amplification, electrophoresis detection and sequence analysis. The judgment method is based on sequence consistency and molecular phylogenetic tree construction to ensure the accuracy of the identification results.

5. Requirements for identification report

• Include photos and descriptions of wood samples
• Detailed record of test methods and judgment basis
• Clear identification results and attach relevant explanations

6. Implementation suggestions

To ensure the effective implementation of the standard, it is recommended to:

1. Strengthen laboratory capacity building and equip with advanced instruments and equipment.
2. Establish an authoritative DNA barcode reference database.
3. Formulate unified quality control standards.
4. Promote international technical exchanges and cooperation.