GB/T 40195-2021 in English
VALIDDetection and identification of Anoda cristata (L.) Schlecht.
- Issued on:2021-05-21
- Implemented on:2021-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 40195-2021阿洛葵检疫鉴定方法》由TC271（全国植物检疫标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the core content of the standard
GB/T40195-2021 is my country's first special quarantine and identification standard for the invasive weed Aloestris. The standard system regulates the entire process from sample preparation to result determination, and especially emphasizes the key role of seed morphology identification.
Key technical indicators
| Identification characteristics | Alokui | Comparison with similar species |
|---|---|---|
| Seed shape | Kidney-shaped with awn-like protrusions | Abelmoschus seeds are triangular kidney-shaped |
| Number of lobes | 10-20 lobes in whorls | Hibiscus carpels have 30+ lobes |
| Surface decoration | Tumor-like protrusions | Wild watermelon seedling seeds have reticular patterns |
Key points for standard implementation
Optimization of screening process: The standard stipulates that the use of 0.25cm aperture sieve can effectively separate the seeds of Alocasia oleifera. In actual work, it is recommended to use electric sieve to improve efficiency.
Key points for morphological identification:Key points to observe: ① The mixed distribution characteristics of stellate hairs and unicellular hairs ② The whorled structure of the sectional fruit ③ The awn-like protrusions at the hilum.
Technology Evolution Analysis
Compared with traditional identification methods, this standard innovatively:
- Established a merocarp-seed dual identification system
- Introduced stereomicroscope quantitative measurement standards (3.4-3.6mm×3.2-3.4mm)
- For the first time, the national standard clarified the adaptability of Alocasia to genetically modified crop fields
Quarantine Application Recommendations
Recommendations for different scenarios:
- Port quarantine: Focus on agricultural products such as soybeans and cotton from America
- Field monitoring: Conduct stellate hairs feature screening during the flowering and fruiting period from July to October
- Laboratory identification: It is recommended to establish a seed three-dimensional feature database to assist in judgment
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