NY/T 2939-2016 in English
VALIDDescriptors for sweetpotato germplasm resources
- Issued on:2016-10-26
- Implemented on:2017-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$330.00
| Standard No: | NY/T 2939-2016 |
| Document status: | VALID |
| Title in English: | Descriptors for sweetpotato germplasm resources |
| Title in Chinese: | 甘薯种质资源描述规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-10-26 |
| Implemented on: | 2017-04-01 |
| Professional Classification: | NY-Agriculture |
| Related Keywords: | germplasm resources
sweetpotato germplasm resources introduction standard background wild resources domestic resources introduced resources |
| Related Topics: | efficacy description
Specification for Tropical Crops Germplasm Resources Description Pineapple Qualification scope Types of potatoes Water quality description Describe water quality integrated sweet potato Germplasm storage cabinet Description of rubber grass germplasm resources Sweet potato germplasm resource description specifications and data Emergency resource variety standards Silica resource definition ny/t2997-2016 |
Introduction
Standard Background and Significance
NY/T 2939-2016 was proposed by the Crop Management Department of the Ministry of Agriculture, and it specifies the standardized description system of sweet potato Ipomoea batatas germplasm resources. The standard was implemented in April 2017, providing a technical basis for the construction of sweet potato germplasm resource banks, variety breeding and intellectual property protection in my country.
Core content framework
| Trait category | Descriptive indicators | Typical parameters |
|---|---|---|
| Basic information | 23 items | National unified number, longitude and latitude of origin, etc. |
| Botanical characteristics | 53 items | Leaf shape classification system (6 types), potato defect types (7 categories) |
| Quality traits | 18 items | Dry matter rate determination, anthocyanin content classification |
Key Technical Points
1. Germplasm Identification System
A three-level coding system is adopted: domestic resources (ZS+6 digits), wild resources (YS+6 digits), and introduced resources (SY+6 digits) to ensure the uniqueness of the germplasm ID.
2. Morphological standardization description
Leaf characteristicsEstablish a visual classification system:
- 6 categories of top leaf shapes (with illustrations)
- 5 levels of leaf notch numbers (none to multiple pairs)
- 8 levels of vein color gradient
Implementation and application suggestions
- Field observations must be strictly carried out according to the growth period (such as investigating stem tip traits 40-50 days after planting)
- Quality analysis should adopt a unified method (refer to GB/T 5009.7 for the determination of soluble sugar in fresh potatoes)
- Standard control varieties should be set for resistance evaluation
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