Original: English



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E

TG/122/4(proj.2)

ORIGINAL: English

DATE: 2013-05-13

INTERNATIONAL UNION FOR THE PROTECTION OF NEW VARIETIES OF PLANTS

Geneva




DRAFT











SORGHUM
UPOV Code: SRGHM
Sorghum ssp.


*





GUIDELINES
FOR THE CONDUCT OF TESTS
FOR DISTINCTNESS, UNIFORMITY AND STABILITY
prepared by experts from Spain
to be considered by the


Technical Working Party for Agricultural Crops
at its forty-second session, to be held in Kyiv, Ukraine, from June 17 to 21 2013

Alternative Names:*


Botanical name

English

French

German

Spanish

Sorghum bicolor,
Sorghum sudanense
S. bicolor x S. sudanense


Sorghum, Sudan Grass

Sorgho, Sorgho du Soudan

Mohrenhirse, Sudangrass

Sorgo,
Pasto de Sudán




The purpose of these guidelines (“Test Guidelines”) is to elaborate the principles contained in the General Introduction (document TG/1/3), and its associated TGP documents, into detailed practical guidance for the harmonized examination of distinctness, uniformity and stability (DUS) and, in particular, to identify appropriate characteristics for the examination of DUS and production of harmonized variety descriptions.


ASSOCIATED DOCUMENTS

These Test Guidelines should be read in conjunction with the General Introduction and its associated TGP documents.



TABLE OF CONTENTS PAGE


1. Subject of these Test Guidelines 2

2. Material Required 2

3. Method of Examination 3

3.1 Number of Growing Cycles 3

3.2 Testing Place 3

3.3 Conditions for Conducting the Examination 3

3.4 Test Design 3

3.5 Additional Tests 3

4. Assessment of Distinctness, Uniformity and Stability 3

4.1 Distinctness 3

4.2 Uniformity 5

4.3 Stability 5

5. Grouping of Varieties and Organization of the Growing Trial 5

6. Introduction to the Table of Characteristics 6

6.1 Categories of Characteristics 6

6.2 States of Expression and Corresponding Notes 6

6.3 Types of Expression 6

6.4 Example Varieties 6

6.5 Legend 7

7. Table of Characteristics/Tableau des caractères/Merkmalstabelle/Tabla de caracteres 8

8. Explanations on the Table of Characteristics 16

8.1 Explanations covering several characteristics 16

8.2 Explanations for individual characteristics 17

9. Literature 25

10. Technical Questionnaire 26

1. Subject of these Test Guidelines

These Test Guidelines apply to all varieties of Sorghum bicolor, Sorghum sudanense and hybrid Sorghum bicolor x Sorghum sudanense.




2.Material Required

2.1 The competent authorities decide on the quantity and quality of the plant material required for testing the variety and when and where it is to be delivered. Applicants submitting material from a State other than that in which the testing takes place must ensure that all customs formalities and phytosanitary requirements are complied with.


2.2 The material is to be supplied in the form of seed.
2.3 The minimum quantity of plant material, to be supplied by the applicant, should be:
0.2 kg for parentals

1 kg for hybrids and open-pollinated varieties.


The seed should meet the minimum requirements for germination, species and analytical purity, health and moisture content, specified by the competent authority. In cases where the seed is to be stored, the germination capacity should be as high as possible and should, be stated by the applicant.
2.4 The plant material supplied should be visibly healthy, not lacking in vigor, nor affected by any important pest or disease.
2.5 The plant material should not have undergone any treatment which would affect the expression of the characteristics of the variety, unless the competent authorities allow or request such treatment. If it has been treated, full details of the treatment must be given.




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