Acta Phytopathologica 13. (1978)

1-2. szám

DISEASES Systemic Resistance Induced by a Strain of Alfalfa Mosaic Virus in Phaseolus vulgaris L. G. G. Conti, G. Vegetti and E. Rossi............................................................. 1 Peroxidases of Red Clovers Resistant and Susceptible to Bean Yellow Mosaic Virus S. J. Sheen and Stephen Diachun.................................................................21 Increased Free Formaldehyde Level in Crude Extract of Virus Infected Hypersensitive Tobaccos E. Tyihák, J. Balla, R. Gáborjányi and E. Balázs..................................29 Cytokinins in White Clover Plants Infected by Clover Phyllody Mycoplasma R. Gáborjányi and I. Sziráki..............................................................................33 Changes in Chemical Composition of Pigeon Pea Fruits Due to Arhar (Pigeon Pea) Mo­saic Virus Infection R. Singh and T. P. Mall.................................................................................41 Viruses in Natural Infection of Yellow Lupin (Lupinus luteus L.) in Poland. II. Suscepti­bility of Varieties of Yellow Lupin to Bean Yellow Mosaic Virus I. Frencel, H. Pospieszny and W. Swiçcicki.................................................45 New Artificial Hosts and Non-Hosts of Plant Viruses and their Role in the Identification and Separation of Viruses. III. Tobravirus Group: Tobacco Rattle Virus J. Horváth ..................................................................................................... 51 New Artificial Hosts and Non-Hosts of Plant Viruses and their Role in the Identification and Separation of Viruses. IV. Tobamovirus Group: Tobacco Mosaic Virus and Tomato Mosaic Virus J. Horváth ..................................................................................................................57 Relationship Among Some Tobamoviruses. I. A Symptomatological and Serological Comparison J. Burgyán, L. Beczner and R. Gáborjányi..............................................75 Comparison of the Hungarian and the Type Isolates of Dulcamara Mottle Virus Réka Vassányi and L. Beczner ......................................................................... 87 Interaction in Plants Infected with Viruses and Fungi. I. Interaction between Each of Cucumber Mosaic Virus and Watermelon Mosaic Virus against Sphaerotheca fuliginea (Sclecht. ex Fr.) Pollacci, in some Cucurbitaceous Hosts W. H. Besada....................................................................................................95 Transmission de Germes de Type Rickettsoïde par la Plante Parasite: Cuscuta subinclusa Durr, et Hilg. N. Benhamou, J. Gianotti et C. Louis..............................................................107 The Effect of Bacterial Wilt on the Uptake of Manganese and Zinc in Alfalfa Anna Kűdelová, Eva Bergmannová, V. Kûdela and L. Taimr................121 Histopathology of Vascular Tissue System in Grapevine Affected by Legno Riccio (Rugose Wood, Stem Pitting) Á. Hegedűs and J. Lehoczky...............................................................................133 Contents

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