 | PREFACE (R. Koenig, Dr. H.L. Paul) |
| A REVIEW OF PROBLEMS AND PROGRESS IN RESEARCH ON VIRUSES AND VIRUS DISEASES OF NARCISSUS IN BRITAIN (A.A. Brunt) |
| BEAN YELLOW MOSAIC VIRUS IN SOME IRIDACEOUS PLANTS (A.F.L.M. Derks, Jenny L. Vink-van den Abeele, P.J. Muller) |
| TWO VIRUSES FROM RHIZOMATOUS IRIS (V. Lisa) |
| SOME PROPERTIES OF A POTYVIRUS OCCURRING IN TRADESCANTIA AND ZEBRINA SPP. (B.E.L. Lockhart, J. Betzold) |
| TWO NEW POTEXVIRUSES FROM MONOCOTYLEDONS (Olwen M. Stone) |
| SOME HOSTS AND PROPERTIES OF AN ISOLATE OF NERINE VIRUS X FROM AGAPANTHUS PRAECOX SUBSP. ORIENTALIS (S. Phillips, A.A. Brunt) |
| A POTEXVIRUS INFECTING NANDINA DOMESTICA 'HARBOR DWARF' (F.W. Zettler, E. Hiebert, E. Maciel-Zambolim, M.M. Abo El-Nil, R.G. Christie) |
| LATENT INFECTION OF IMPATIENS BY A POTEXVIRUS (B.E.L. Lockhart, J. Betzold) |
| DIAGNOSIS OF VIRUSES IN ORNAMENTAL PLANTS WITH SPECIAL REFERENCE TO SEROLOGICAL METHODS (E. Luisoni) |
| DETECTION OF TULIP-BREAKING VIRUS IN TULIPS BY THE ENZYME-LINKED IMMUNOSORBENT ASSAY (ELISA) (A.R. van Schadewijk, J. Eggink) |
| DETECTION OF LILY SYMPTOMLESS VIRUS IN LEAVES AND BULB SCALES OF LILY PLANTS WITH THE IMMUNODIFFUSION DROP TEST AND WITH ELISA (D.H.M. van Slogteren, J.C.M. Beijersbergen, M. H. Bunt, C. Th.C. van der Hulst) |
| SOME ASPECTS OF ESTIMATING VIRUS ANTIGEN CONCENTRATIONS BY ELISA (P. Korpraditskul, R. Casper, D.-E. Lesemann) |
| DETECTION OF A WIDE SPECTRUM OF VIRUS STRAINS BY INDIRECT ELISA AND SEROLOGICAL TRAPPING ELECTRON MICROSCOPY (STREM) (M.H.V. Van Regenmortel, A. Nicolaïeff, J. Burckard) |
| IDENTIFICATION OF TWO ISOMETRIC VIRUSES IN POINSETTIAS (R. Koenig, D.E. Lesemann) |
| CONDITIONS FOR THE USE OF PROTEIN A IN COMBINATION WITH THE DERRICK METHOD OF IMMUNO ELECTRON MICROSCOPY (D.-E. Lesemann, H.-L. Paul) |
| SOME OBSERVATIONS AND EXPERIMENTS ON IMMUNOSORBENT ELECTRON MICROSCOPY OF PLANT VIRUSES (R.G. Milne) |
| INTERNATIONAL TRADE IN ORNAMENTAL PLANTS: PHYTOSANITARY AND PLANT VIRUS QUARANTINE PROBLEMS (M. Hollings) |
| DISSEMINATION OF VIRUSES OF ORNAMENTALS AND APPROACHES TO REDUCING SPREAD AND IMPROVING METHODS OF DIAGNOSIS (R.H. Lawson) |
| ORNAMENTAL PLANTS AS VIRUS VECTORS: REGULATORY CONSIDERATIONS (R.P. Kahn) |
| REGULATIONS CONCERNING SOME VIRUSES IN ORNAMENTAL PLANTS AS CONSIDERED BY THE EEC COUNCIL DIRECTIVES 77/93, 80/392 AND 80/393 (O. Lovisolo) |
| CUCUMBER MOSAIC VIRUS - VARIATION AND PROBLEMS OF IDENTIFICATION (R.I.B. Francki, T. Hatta) |
| CARNATION CRYPTIC VIRUS (V. Lisa, E. Luisoni, R.G. Milne) |
| NINE VIRUSES ISOLATED FROM PELARGONIUM IN THE UNITED KINGDOM (Olwen M. Stone) |
| SOME PROPERTIES OF A DISTINCTIVE ISOMETRIC VIRUS FROM PELARGONIUM (N. Pleše, Z. Štefanac) |
| ISOLATION OF TWO RHABDOVIRUSES FROM PITTOSPORUM AND PELARGONIUM (G.L. Rana, A. Di Franco) |
| OCCURRENCE OF A ROD-SHAPED VIRUS IN FUCHSIA CULTIVARS (Lois J. Johns, R. Stace-Smith, Diane Y. Kadota) |
| HONEYSUCKLE LATENT VIRUS, A CARLAVIRUS INFECTING LONICERA PERICLYMENUM AND L. JAPONICA (CAPRIFOLIACEAE) (A.A. Brunt, S. Phillips, B.J. Thomas) |
| FURTHER OBSERVATIONS ON LILAC RINGSPOT, A DISEASE CAUSED BY AN UNIDENTIFIED VIRUS (F.A. van der Meer) |
| SOME NEW DATA ON THE SUSCEPTIBILITY OF GARDEN NASTURTIUM (TROPAEOLUM MAJUS L.) TO VIRUSES (J. Horváth, P. Salamon, W.H. Besada) |
| NEW OBSERVATIONS AIDING THE IDENTIFICATION OF VIRUSES IN DIFFERENT GROUPS (L. Beczner) |
| RECENT APPROACHES FOR CONTROL OF NON-PERSISTENTLY TRANSMITTED APHID-BORNE VIRUSES (B. Raccah, A. Barnett, G. Loebenstein) |
| PRODUCTION OF VIRUS-FREE ORNAMENTAL PLANTS IN TISSUE CULTURE (T.C. Allen, W.C. Anderson) |
| ON THE PRODUCTION OF VIRUS FREE BEGONIA TUBERHYBRIDA VOSS CV. MULTIFLORA VARIETIES (W. Welvaert, G. Samyn, E. Van Wymersch) |
| EVALUATION OF DIEFFENBACHIA MACULATA 'PERFECTION' PLANTS FREE OF DASHEEN MOSAIC VIRUS (F.W. Zettler, R.D. Hartman, J.F. Knauss, M.E. Taylor-Knauss, A.R. Chase) |
| THE EFFECTS OF TEMPERATURE ON THE ULTRASTRUCTURE OF CARNATION ETCHED RING VIRUS INFECTED SAPONARIA VACCARIA LEAF CELLS (S. S. Hearon, Roger H. Lawson) |
| ULTRASTRUCTURE OF CATTLEYA LEAF CELLS INFECTED WITH CYMBIDIUM MOSAIC VIRUS (C. Hiruki, M.H. Chen, D.V. Rao) |
| INTRACELLULAR CHANGES IN TREES INFECTED WITH FIG MOSAIC (B. Plavšic, D. Milicic) |
| BIOLOGICAL AND BIOCHEMICAL RELATIONSHIPS AMONG VIROIDS IN ORNAMENTAL PLANTS (R.K. Horst) |
| TESTING FOR VIROIDS, STILL A PROBLEM ? (H. Huttinga) |
| CHRYSANTHEMUM STUNT AND CHLOROTIC MOTTLE. ESTABLISHMENT OF HEALTHY CHRYSANTHEMUM PLANTS AND STORAGE AT LOW TEMPERATURE OF CHRYSANTHEMUM, CARNATION, CAMPANULA AND PELARGONIUM IN TUBES (N. Paludan) |
| AMANTADINE SUPPLEMENTED TISSUE CULTURE MEDIUM: A METHOD FOR OBTAINING CHRYSANTHEMUMS FREE OF CHRYSANTHEMUM STUNT VIROID (R.K. Horst, D. Cohen) |
| DETECTION OF CHRYSANTHEMUM STUNT AND CHLOROTIC MOTTLE VIROIDS BY SLAB GEL ELECTROPHORESIS (M. Monsion, G. Macquaire, J.C. Bachelier, C. Faydi, J. Dunez) |
| HYDRANGEA VIRESCENCE: SYMPTOM SUPPRESSION IN PLANTS INFECTED WITH THE MYCOPLASMALIKE ORGANISM (MLO) ASSOCIATED WITH MILD DISEASE CHALLENGE INFECTED WITH THE SEVERE DISEASE MLO (R.H. Lawson, F.F. Smith) |
