Balázs, Ervin and Tóth, Á (1974) Jonathan spot induced by ultraviolet light. ACTA PHYTOPATHOLOGICA ET ENTOMOLOGICA HUNGARICA, 9 (3-4). pp. 179-184. ISSN 0238-1249
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Abstract
Experiments were conducted to demcnstrate the spot-inducing effect of ultraviolet light in Jonathan spot of mature apples (Medus sylvestri:; Miller). Ultraviolet light irradiation either from the sun under orchard conditions or artificially induced by UV germicidal lamp causes Jonathan spot. In the spotted apple peel tissues anthocyanins (mainly cyanidine-3-galactoside) were oxidized or destroyed. Simultaneously with UV light irradiation, there were increases in the activities of peroxidase, polyphenol oxidase and phenylalanine ammonia lyase.
| Item Type: | Article |
|---|---|
| Subjects: | S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés > SB975 Plant protection / növényvédelem |
| Depositing User: | Réka Sramek |
| Date Deposited: | 08 Jun 2026 07:47 |
| Last Modified: | 08 Jun 2026 07:47 |
| URI: | https://real.mtak.hu/id/eprint/239292 |
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