LY/T 1847-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
LY/T 1847-2025	RFQ	ASK	3 days	Guidelines for the conduct of tests for distinctness, uniformity andstability of Lagerstroemia L.	Valid
LY/T 1847-2009	599	Add to Cart	3 days	Guidelines for the conduct of tests for distinctness, uniformity and stability. Crapemytle(Lagerstroemia indica L.)

Basic data

Standard ID: LY/T 1847-2025 (LY/T1847-2025)
Description (Translated English): Guidelines for the conduct of tests for distinctness, uniformity andstability of Lagerstroemia L.
Sector / Industry: Forestry Industry Standard (Recommended)
Classification of Chinese Standard: B05
Classification of International Standard: 65.020.20
Date of Issue: 2025-07-21
Date of Implementation: 2025-11-01
Older Standard (superseded by this standard): LY/T 1847-2009
Issuing agency(ies): National Forestry and Grassland Administration

LY/T 1847-2009: Guidelines for the conduct of tests for distinctness, uniformity and stability. Crapemytle(Lagerstroemia indica L.)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Guidelines for the conduct of tests for distinctness, uniformity and stability.Crapemytle(Lagerstroemia indica L.) ICS 65.020 B61 People's Republic of China Forestry Industry Standard New plant variety specificity, consistency, stability Test Guide Ziwei Released on June 17,.2009 2009-10-01 implementation State Forestry Administration released

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 DUS test technical requirements 1 4.1 Test material 1 4.2 Test Method 1 5 Specificity, consistency and stability evaluation 2 5.1 specificity 2 5.2 Consistency 3 5.3 Stability 3 6 variety group 3 6.1 Variety group description 3 6.2 Grouping Features 3 7 trait characteristics and related symbol description 3 7.1 Feature Type 3 7.2 Expression status and code 3 7.3 Expression Type 3 7.4 Standard Variety 3 7.5 Symbol Description 3 Appendix A (Normative Appendix) Variety traits characteristics 5 Appendix B (informative) Technical Questionnaire 11 Reference 13

Foreword

This standard is based on GB/T 19557.1-2004 "General guidelines for the specificity, consistency and stability of new plant varieties". Appendix A of this standard is a normative appendix, and Appendix B is an informative appendix. This standard is proposed and managed by the Office of Plant Variety Protection of the State Forestry Administration. This standard is drafted by. Beijing Forestry University, State Forestry Administration Plant New Variety Protection Office. The main drafters of this standard. Zhang Qixiang, Zhou Jianren, Huang Faji, Gao Yizhen, Pan Huitang, Tian Miao. New plant variety specificity, consistency, stability Test Guide Ziwei

1 Scope

Test technical requirements. This standard applies to the testing of all new varieties of Lagerstroemia.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 19557.1-2004 General guidelines for the testing of plant species specificity, consistency and stability

3 Terms and definitions

The terms and definitions established in GB/T 19557.1-2004 apply to this standard.

4 DUS test technical requirements

4.1 Test materials 4.1.1 The time and place of the test variety delivered by the approval authority and the quantity and quality of the plant material required for testing. Non-tested For materials submitted by the state or region, the applicant shall provide relevant documents such as customs and phytosanitary in accordance with the relevant provisions on entry and exit and transportation. 4.1.2 The test material submitted should be a 2-year-old plant that is propagated by cuttings. 4.1.3 The number of test materials provided shall not be less than 10 strains. 4.1.4 The new variety of materials to be tested shall be plants that are free of pests and diseases and grow normally. 4.1.5 Except where the approval authority permits or requires the treatment of the material, the submitted plant material shall not be subject to any amount of trait expression. External processing. If it has been processed, detailed information about the processing should be provided. 4.2 Test methods 4.2.1 Test cycle and time Test at least one growth cycle if the test conditions are met. 4.2.2 Test location The test site for the new variety to be tested shall be carried out in the test base and laboratory designated by the approval authority. 4.2.3 Test conditions The test shall be carried out under the condition that the relevant characteristics of the new variety to be tested can be fully expressed, and the selected test materials shall be at least at the test site. The site is fixed for more than one year. 4.2.4 Test Design 4.2.4.1 New varieties to be tested 10 plants should be planted in the test area, planted in the same location and environmental conditions as standard and similar varieties. 4.2.4.2 If the test requires extraction of certain parts of the plant as a sample, the sample collection shall not affect the entire growth cycle of the test plant. Observation. 4.2.4.3 Unless otherwise stated, all observations shall be made on materials on the same part of 6 plants or 6 plants. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of LY/T 1847-2025_English be delivered?

Answer: Upon your order, we will start to translate LY/T 1847-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of LY/T 1847-2025_English with my colleagues?

Answer: Yes. The purchased PDF of LY/T 1847-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version LY/T 1847-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version LY/T 1847-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.