International union for the protection of new varieties of plants




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E

TG/92/4

ORIGINAL: English

DATE: 2004-03-31

INTERNATIONAL UNION FOR THE PROTECTION OF NEW VARIETIES OF PLANTS

GENEVA







PERSIMMON
(Diospyros kaki L.)


*



GUIDELINES
FOR THE CONDUCT OF TESTS
FOR DISTINCTNESS, UNIFORMITY AND STABILITY

Alternative Names:*




Latin

English

French

German

Spanish

Diospyros kaki L.

Persimmon

Plaqueminier

Kakipflaume

Caqui, Kaki


ASSOCIATED DOCUMENTS
These guidelines should be read in conjunction with document TG/1/3, “General Introduction to the Examination of Distinctness, Uniformity and Stability and the Development of Harmonized Descriptions of New Varieties of Plants” (hereinafter referred to as the “General Introduction”) and its associated “TGP” documents.

TABLE OF CONTENTS PAGE


1. Subject of these Test Guidelines 3

2. Material Required 3

3. Method of Examination 3

3.1 Duration of Tests 3

3.2 Testing Place 3

3.3 Conditions for Conducting the Examination 3

3.4 Test Design 3

3.5 Number of Plants / Parts of Plants to be Examined 4

3.6 Additional Tests 4

4. Assessment of Distinctness, Uniformity and Stability 4

4.1 Distinctness 4

4.2 Uniformity 4

4.3 Stability 5

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

6. Introduction to the Table of Characteristics 5

6.1 Categories of Characteristics 5

6.2 States of Expression and Corresponding Notes 6

6.3 Types of Expression 6

6.4 Example Varieties 6

6.5 Legend 6

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

8. Explanations on the Table of Characteristics 19

8.1 Explanations covering several characteristics 19

8.2 Explanations for individual characteristics 19

8.3 Classification of Persimmon 28

9. Literature 31

10. Technical Questionnaire 32




1.Subject of these Test Guidelines


These Test Guidelines apply to all varieties of Diospyros kaki L. and their hybrids.

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 one-year-old grafted plants on rootstocks of Diospyros kaki L. or Diospyros lotus L.
2.3 The minimum quantity of plant material, to be supplied by the applicant, should be:
5 plants.

2.4 The plant material supplied should be visibly healthy, not lacking in vigor, nor affected by any important pest or disease. It should preferably not be obtained from in vitro propagation. If it has been produced by in vitro propagation, this fact must be stated by the applicant.


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.


3.Method of Examination

3.1 Duration of Tests


The minimum duration of tests should normally be two independent growing cycles. For the purposes of these Test Guidelines, a growing cycle refers to the fruiting cycle.

3.2 Testing Place


The tests should normally be conducted at one place. If any characteristics of the variety, which are relevant for the examination of DUS, cannot be observed at that place, the variety may be tested at an additional place.

3.3 Conditions for Conducting the Examination


The tests should be carried out under conditions ensuring satisfactory growth for the expression of the relevant characteristics of the variety and for the conduct of the examination. In particular, it is essential that the trees produce a satisfactory crop of fruit in each of the two growing cycles.

3.4 Test Design


3.4.1 Each test should be designed to result in a total of at least 5 plants.
3.4.2 The design of the tests should be such that plants or parts of plants may be removed for measurement or counting without prejudice to the observations which must be made up to the end of the growing cycle.

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