ISHS Acta Horticulturae 301: IV International Symposium on Processing Tomatoes
INVESTIGATION ON INTERNAL BROWNING ETIOLOGY |
| Authors: | A. Ragozzino, L. D'Aquino, A. Crescenzi |
| Abstract:
Internal browning (syn.= bronzing, gray wall?) of tomato fruits has been recognized as a serious disorder, expecially in the greenhouse crops, for several years and is generally thought to involve tobamovirus. Several Authors have tried to experimentally reproduce the disease by inoculating tomato plants with TMV isolates but the results were in any case erratic. Recently I.B. has been found on many tomato varieties incorporating resistance genes to TMV and, in spite of the several attempts to isolate the virus, the results were consistently negative. The negative results, obtained during greenhouse trials carried out in order to experimentally reproduce the disease using different techniques, are reported. The light and electron microscope investigations didn't show the presence of bacteria or virus-like particles in the dis eased tissues. On the basis of these results I.B. is interpreted to be a disease not caused by virus. | |
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