Conditions for multiplication and multiplication by micropropagation of basic mother plants
20.—(1) Subject to sub-paragraphs (2) to (5), a basic mother plant mentioned in paragraph 15(1)(b)(i) may be multiplied or multiplied by micropropagation in order to produce the necessary number of basic mother plants.
(2) The multiplication or multiplication by micropropagation mentioned in sub-paragraph (1) must be carried out in accordance with the appropriate EPPO protocol, provided that such protocol has been tested on the relevant genus or species for a period of time considered sufficient to allow phenotype validation of the plants as regards the trueness to the description of the variety based on the observation of the fruit production or of the vegetative development of rootstocks.
(3) In relation to the multiplication, or multiplication by micropropagation, of a basic mother plant of a particular genus or species listed in column 1 of the Table in sub-paragraph (5), the basic mother plant—
(a)may be multiplied for the maximum number of generations prescribed for that genus or species in the corresponding entry in column 2 of that Table; and
(b)may not be maintained as a basic mother plant beyond any period which may be prescribed in the corresponding entry in column 3 of that Table.
(4) Where rootstocks are part of the basic mother plant, the rootstock must be basic material of the first generation.
(5) Where, in respect of a particular genus or species listed in column 1 of the Table in this sub-paragraph, multiple generations of basic mother plants are prescribed in column 2 of that Table, each generation of basic mother plant, other than the first one, may derive from any previous generation.
Table of maximum permitted number of generations in the field under non-insect proof conditions and maximum permitted life span of basic mother plants per genera or species.
Column 1 Genera or species | Column 2 Maximum number of generations | Column 3 Maximum permitted life span |
| Castanea sativa Mill. | 2 generations; or if the basic mother plant is a rootstock, 3 generations | |
| Citrus L,. Fortunella Swingle and Poncirus Raf. | 1 generation; or if the basic mother plant is a rootstock, 3 generations | |
| Corylus avellana L. | 2 generations | |
Cydonia oblonga Mill., Malus Mill. and Pyrus L. | 2 generations; or if the basic mother plant is a rootstock, 3 generations | |
| Ficus carica L. | 2 generations | |
| Fragaria L. | 5 generations | |
| Juglans regia L. | 2 generations | |
| Olea europaea L. | 1 generation | |
Prunus amygdalus, P. armeniaca, P. domestica, P. persica and P. salicina | 2 generations; or if the basic mother plant is a rootstock, 3 generations | |
Prunus avium and P. cerasus | 2 generations; or if the basic mother plant is a rootstock, 3 generations | |
| Ribes L. | 3 generations | 6 years |
| Rubus L. | 2 generations | 4 years |
| Vaccinium L. | 2 generations |