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:*
S. bicolor x S. sudanense
Sorghum, Sudan Grass
Sorgho, Sorgho du Soudan
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.
These Test Guidelines should be read in conjunction with the General Introduction and its associated TGP documents.
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 sudanenseand hybrid Sorghum bicolor x Sorghum sudanense.
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.