Articles
Pre- and postharvest findings of Fusarium spp. in apple
Article number
1451_15
Pages
103 – 110
Language
English
Abstract
Core rot in apple has only been considered a problem in a limited number of cultivars and has not been a focus in Norway, or in many other countries.
There is currently a high demand for apple juice and cider in Norway.
As core rot is not detectable on the fruit surface until the rot reaches the outer fruit flesh, it is possible for infected fruit to be used for juice without noticing the rot.
Since Fusarium spp., one of the known causes of core rot, is a known producer of mycotoxins, precautionary investigations are needed.
Over several seasons it was found that both pre- and postharvest rot of Fusarium spp. were common on most of the cultivars grown in Norway.
As in other countries, Fusarium avenaceum has dominated so far, but Fusarium paeoniae was also identified on apple.
Inoculation experiments with attached fruit and in storage were successful both in establishing core rot and detecting different mycotoxins from the fruit.
There were differences between isolates of F. avenaceum in both the type of mycotoxins produced and the amount.
A potential life cycle for Fusarium spp. on apple fruit in Norway is suggested, and possible ways of reducing the incidence both pre- and postharvest are discussed.
There is currently a high demand for apple juice and cider in Norway.
As core rot is not detectable on the fruit surface until the rot reaches the outer fruit flesh, it is possible for infected fruit to be used for juice without noticing the rot.
Since Fusarium spp., one of the known causes of core rot, is a known producer of mycotoxins, precautionary investigations are needed.
Over several seasons it was found that both pre- and postharvest rot of Fusarium spp. were common on most of the cultivars grown in Norway.
As in other countries, Fusarium avenaceum has dominated so far, but Fusarium paeoniae was also identified on apple.
Inoculation experiments with attached fruit and in storage were successful both in establishing core rot and detecting different mycotoxins from the fruit.
There were differences between isolates of F. avenaceum in both the type of mycotoxins produced and the amount.
A potential life cycle for Fusarium spp. on apple fruit in Norway is suggested, and possible ways of reducing the incidence both pre- and postharvest are discussed.
Authors
J. Børve, M. Almvik, M.B. Brurberg
Keywords
aurofusarin, enniatins, moniliformin, mouldy core, wet core rot
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