LY/T 3290-2021Guidelines for the conduct of tests for distinctness, uniformity and stability (DUS) - Maple (Acer L. ) (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted:

Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:

1 Scope

This document specifies the technical requirements for the specificity, consistency and stability testing (hereinafter referred to as DUS) of new species of Acer (AcerL:) plants:

This document applies to DUS testing of all new species of Maple:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

GB/T 19557.1 General rules for the specificity, consistency and stability testing of new plant varieties

3 Terms, Definitions and Abbreviations

3.1 Terms and Definitions the terms and definitions defined in GB/T 19557.1 apply to this document:

3.2 Abbreviations

The following abbreviations apply to this document:

QL:QualitativeCharacteristics QN: Quantitative Characters (QuantitativeCharacteristics) PQ: Pseudo-qualitativeCharacteristics MG: Group measurement (MeasurementforaGroupofPlants) to measure a batch of plants or plant organs MS: Individual measurement (MeasurementforaNumberofSinglePlants) for a certain number of plants or plant organs Measurement VG: Visual ObservationforaGroupofPlants makes a visual inspection of a batch of plants or plant organs VS: Individual visual inspection (Visual ObservationforaaNumberofSinglePlants) Visual inspection of individual plants or plant organs

4 Test technical requirements

4.1 Test materials

4.1.1 The applicant for variety rights shall submit plant materials of the applied variety that meet the requirements of quantity and quality at the specified time and place: non-testing country or the materials submitted by the region, the applicant must provide customs, phytosanitary and other relevant documents in accordance with the relevant regulations on entry, exit and transportation:

4.1.2 The test material is at least 2-year-old plants by vegetative propagation: And indicate the type of rootstock used, age and grafting method:

4.1.3 The number of test materials submitted should not be less than 10 plants:

4.1.4 The test materials to be tested should be plants that are free from pests and diseases and grow normally: