International union for the protection of new varieties of plants union internationale pour la protection
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I. Subject of these Guidelines These Test Guidelines apply to all vegetatively propagated varieties of Lavandula L. of the family Labiatae (Lamiaceae). However, the Test Guidelines are particularly adapted to the following sections: Lavandula section: Infertile bracts at the top of the spike absent. Bracteole at the base of flower present. - L. angustifolia Mill. (Lavender, English lavender, Lavande) (syn. L. vera DC., L. officinalis Chaix) - L. x burnatii Briq. (Lavendin, Spike Lavender, Lavandin) (syn. L. x hybrida Reverchon) - L. latifolia Medik. (aspic) (syn. L. spica L.) Stoechas section: Petal like infertile bracts at the top of the spike present. Bracteole at the base of the flower absent. - L. stoechas L. (Italian lavender, Spanish lavender, lavande à toupet) (including syn. L. pedunculata and L. stoechas L. subsp. canariensis (Boiss.) Rozeira) - L. viridis L’Herit. - L. dentata L. (French lavender, lavande anglaise) Pterostoechas section: Infertile bracts at the top of the spike absent. Multi-branched stems with wing like corolla. Bracteole at the base of the flower absent.
Intersectional crosses:
II. Material Required 1. The competent authorities decide when, where and in what quantity and quality the plant material required for testing the variety 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 are complied with. As a minimum, the following quantity of material is recommended: 8 young plants (less than one year old). 2. The plant material supplied should be visibly healthy, not lacking in vigor or affected by any important pests or diseases. 3. The plant material must not have undergone any treatment unless the competent authorities allow or request such treatment. If it has been treated, full details of the treatment must be given. III. Conduct of Tests 1. A test should normally be conducted during a single growing cycle. If the examination cannot be conducted satisfactorily in a single growing cycle, the test should be extended to a second independent growing cycle. 2. The test should normally be conducted at one place. If any important characteristics of the variety cannot be seen at that place, the variety may be tested at an additional place. 3. 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. The size of the plots should be such that plants or parts of plants may be removed for measurement and counting without prejudice to the observations which must be made up to the end of the growing cycle. Each test should be designed to result in a total of at least 8 plants. Separate plots for observation and for measuring should only be used if they have been subject to similar environmental conditions. 4. Additional tests for special purposes may be established. IV. Methods and Observations 1. All observations determined by measurement or counting should be made on 8 plants or parts taken from each of 8 plants. 2. For the assessment of uniformity a population standard of 1% with an acceptance probability of at least 95% should be applied. In the case of a sample size of 8 plants, the maximum number of off-types allowed would be 1. 3. Unless otherwise stated, all observations on the plant should be made in winter, before flower stem development. 4. All observations on the leaf, flowering stem, spike and flower should be made at the time of full flowering. 5. All observations on the flowering stem should be made on the main flowering stem. 6. For Lavandula section varieties, the observation of bracteoles is made when the flower first opens. 7. For certain characteristics, different example varieties are given for the Lavandula section and the Stoechas or the Pterostoechas section. The former is indicated by L and the latter by S/Ps. 8. Because daylight varies, color determinations made against a color chart should be made either in a suitable cabinet providing artificial daylight or in the middle of the day in a room without direct sunlight. The spectral distribution of the illuminant for artificial daylight should conform with the CIE Standard of Preferred Daylight D 6500 and should fall within the tolerance set out in the British Standard 950, Part I. These determinations should be made with the plant part placed against a white background. V. Grouping of Varieties 1. The collection of varieties to be grown should be divided into groups to facilitate the assessment of distinctness. Characteristics which are suitable for grouping purposes are those which are known from experience not to vary, or to vary only slightly, within a variety. Their various states of expression should be fairly evenly distributed throughout the collection. 2. It is recommended that the competent authorities use the following characteristics for grouping varieties: (a) Plant: growth habit (characteristic 1) (b) Plant: size (characteristic 2) (c) Leaf: incisions of margin (characteristic 7) (d) Flowering stem: lateral branching (above foliage) (characteristic 13) (e) Spike: presence of infertile bracts (characteristic 28) (f) Stoechas section only: Spike: main color of infertile bracts (characteristic 31) with the following groups: Gr. 1: white Gr. 2: green Gr. 3: pink Gr. 4: light purple Gr. 5: dark purple Gr. 6: violet (g) Corolla: color (characteristic 35) VI. Characteristics and Symbols 1. To assess distinctness, uniformity and stability, the characteristics and their states as given in the Table of Characteristics should be used. 2. Notes (numbers), for the purposes of electronic data processing, are given opposite the states of expression for each characteristic. 3. Legend: (*) Characteristics that should be used on all varieties in every growing cycle over which examinations are made and always be included in the variety descriptions, except when the state of expression of a preceding characteristic or regional environmental conditions render this impossible. (+) See Explanations on the Table of Characteristics in Chapter VIII. (L) = Lavandula section (S/Ps) = Stoechas/Pterostoechas section VII. Table of Characteristics/Tableau des caractères/Merkmalstabelle/Tabla de caracteres
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