REGULATIONS CONCERNING SOME VIRUSES IN ORNAMENTAL PLANTS AS CONSIDERED BY THE EEC COUNCIL DIRECTIVES 77/93, 80/392 AND 80/393

Generally speaking these Directives are rather lightly involved with the problems of virus diseases of ornamental plants, and except the cases of rose wilt, chrysanthemum stunt, and one virus attacking Pelargonium, pathogens of ornamental plants are regulated mainly because of possible implications with agents of fruit trees.

As far as viruses and agents of virus-like diseases (viroids, mycoplasmas and rickettsiae) of ornamental plants are concerned the Directives deal with the following main measures:

1. Art. 3, point l bans the introduction into the territory of Member States of harmful organisms listed in Annex I, part A, letter e), point 1 to 7. I will discuss point 1, which has been modified, and points 3, 5 and 7 of this list, giving a minimum of information on the pathogens involved, or possibly involved, with ornamental plants.

1. Harmful viruses and virus-like pathogens of Cydonia Mill., Malus Mill., Prunus L, Pyrus L, Ribes L and Rubus L.:
   1. Apple proliferation mycoplasm, present in Austria, Czechoslovakia, East and West Germany, Switzerland and locally established in France, Greece, Hungary, Italy, Poland, Rumania, Soviet Union and Spain.
   2. Apricot chlorotic leafroll mycoplasm, present in France and Spain.
   3. Cherry raspleaf virus (American), Nepovirus, present in U.S.A.
   4. Peach mosaic virus (American), mite-transmitted, present in U.S.A.
   5. Peach phony rickettsia, present in U.S.A. and South America
   6. Peach rosette mycoplasm, present in U.S.A.
   7. Peach yellows mycoplasm, present in North America
   8. Pear decline mycoplasm, present in West Germany, Italy and North America; locally established in Austria, Czechoslovakia, France,

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