1. Plant Protection Programme, Fera, Sand Hutton, York, YO41 1LZ, U.K.; and University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD, U.K.
2. UMR 1332 Biologie du Fruit et Pathologie, INRA, Univ. Bordeaux, Villenave d’Ornon, France
3. CTIFL, Centre de Lanxade, 24130 Prigonrieux, France
4. University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD, U.K.
5. Plant Protection Programme, Fera, Sand Hutton, York, YO41 1LZ, U.K.
6. Plant Protection Programme, Fera, Sand Hutton, York, YO41 1LZ, U.K., and IAFRI, Newcastle University, Newcastle upon Tyne, NE1 7RU, U.K.
7. UMR 1332 Biologie du Fruit et Pathologie, INRA, Univ. Bordeaux, Villenave d’Ornon, France.