ISHS Acta Horticulturae 94: XI International Symposium on Fruit Tree Virus Diseases
TRANSMISSION EXPERIMENTS WITH PSEUDO-POX AND SIMILAR DISORDERS OF PLUM |
| Author: | G. SCHMID |
| Abstract:
Attempts were made to transmit the prune pseudo-pox fruit symptoms from one cultivar to the same and to others. Not infected, heat treated, healthy indicators showed mild pseudo-pox symptoms. Symptoms on certain indicators became significantly more severe when they were infected with a source that had necrotic ring spot and chlorotic leaf spot. These virus combinations obviously weaken the indicators quite severely. We conclude that pseudo-pox is a genetic-physiological disorder and not a virus disease, although it may be influenced by certain virus combinations. The typical sunken-in blotches of the cultivar Ersinger are also not caused by a virus but of a genetic-physiological origin. | |
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