GB/T 40137-2021 in English
VALIDSeeds and roots of pseudostellaria radix
- Issued on:2021-05-21
- Implemented on:2021-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$107.00
《GB/T 40137-2021太子参种子、种根》由TC403（全国参茸产品标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
This standard systematically regulates the quality requirements of Pseudostellaria heterophylla propagation materials for the first time, and establishes a complete quality control system through 12 quantitative indicators. Among them, the seed germination rate is required to be ≥80%, and the seed root germination rate is required to be ≥90%, which are significantly higher than the standards for ordinary crops.
Comparison of key technical indicators
| Project | Seed requirements | Seed root requirements |
|---|---|---|
| Clarity | ≥95% | ≥95% |
| Moisture control | 25-30% | 65-75% |
| Grading basis | Not applicable | Root diameter (Grade 3) |
Key points for implementing root grading
The standard innovatively divides seed roots into 3 levels:
- Level 1 seeds: diameter ≥4.8mm, suitable for the construction of high-quality seed source bases
- Level 2 seeds: 3.9-4.7mm, meeting conventional planting needs
- Level 3 seeds: ≤3.8mm, requiring special cultivation measures
The practice in Zherong County, Fujian Province shows that the use of level 1 seed roots can increase the yield by more than 23%.
Suggestions for the implementation of the standard
1. During the procurement process, suppliers should be required to provide a third-party inspection report, with a focus on checking purity and germination rate
2. During the storage stage, a temperature and humidity monitoring system should be established, and the relative humidity of the seed warehouse should be controlled at 55-60%
3. During transportation, it is recommended to use shockproof packaging to prevent bud damage from affecting the germination rate
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