NY/T 3058-2016 in English
VALIDCode of practice for idenfification and evaluation of drought tolerance in rapeseed
- Issued on:2016-12-23
- Implemented on:2017-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
| Standard No: | NY/T 3058-2016 |
| Document status: | VALID |
| Title in English: | Code of practice for idenfification and evaluation of drought tolerance in rapeseed |
| Title in Chinese: | 油菜抗旱性鉴定技术规程 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-12-23 |
| Implemented on: | 2017-04-01 |
| Professional Classification: | NY-Agriculture |
| Related Keywords: | flowering period drought resistance index
drought resistance drought resistance index drought tolerance precise field identification entire growth period natural drought |
| Related Topics: | rape
Solution identification drought resistance Drought resistance Identification of rapeseed Paint identification Enzyme-labeled antibody identification Identification and evaluation technology of flax drought resistance Drought resistance identification quality ny/t2997-2016 |
Introduction
Analysis of the core content of the standard
This standard specifies a complete technical system for the identification of drought resistance of rapeseed, including 4 key identification periods: seed germination period (PEG-6000 simulated drought), seedling stage (soil moisture control), flowering period (artificial water control) and full growth period (natural drought in the field).
Comparison of identification methods
| Identification period | Stress mode | Core indicators | Applicable scenarios |
|---|---|---|---|
| Seed germination period | -0.5MPa PEG solution | Germination drought resistance coefficient | Laboratory initial screening |
| Seedling stage | Soil moisture content 10% | Drought survival rate | Pot test |
| Flowering period | Water control to 10% during flowering period | Drought resistance index (DRI) | Precise field identification |
| Entire growth period | Natural drought (＜300mm) | Drought resistance index (DRI) | Regional adaptability evaluation |
Key technical indicators
Drought resistance index calculation formula
DRI = (Yd/Yn) / (YAd/YAn)
Among them:
Yd—Drought yield of the tested variety (kg/hm²)
Yn—Normal yield of the tested variety (kg/hm²)
YAd—Control variety drought yield (kg/hm²)
YAn—Control variety normal yield (kg/hm²)
Standard implementation recommendations
- Selection of correction varieties: It is recommended to give priority to the local drought-resistant varieties as correction controls
- Data comparability: Different batches of tests need to be standardized through correction varieties
- Composite identification: Important varieties should be double-verified during the seedling stage + the entire growth period
- Environmental control: During drought treatment, the soil moisture content must be strictly controlled at 10±2%
Technology evolution analysis
This standard innovatively establishes a multi-period linkage identification system:
1. PEG-6000 is used to simulate drought during seed germination (instead of the early NaCl solution method)
2. Correction varieties are introduced during the seedling stage to eliminate environmental errors
3. The annual precipitation in the test area is required to be less than 300mm (50mm lower than the 2008 standard) for the entire growth period
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