First record of core rot disease on apple fruit cv. anna 106 local cultivar in Egypt
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Abstract
Fruits of apple plants (Malus domestica L.) cv. Anna 106 collected from different orchards and markets of Egypt were exhibited typical core rot disease symptoms at the first time in Egypt during 2012 and 2013seasons.The incidence of infection is much more prevalent in a wet spring. There are often no visible symptoms of disease until after harvest. In some cases, infected fruit may color and fall prematurely in the orchard. Disease symptoms include mold growth in the core region of the fruit. The rot does not spread into the flesh, and can be seen only when the fruit is cut open. Isolation trials yielded several fungi, i.e., Alternaria spp , Penicillium spp and Fuarium spp . Alterania spp. was the common fungal associated with diseased tissue. Pathogenicity test indicated the ability of the all Alterania spp. isolates to cause core rot disease with typical symptoms on apple fruits cv. Anna 106.The pathogen was isolated and identified as Alternaria alternata (Fr.:Fr.) Kiessl. According to the available literature, this is the first record of core rot on apple cv. Anna 106 in Egypt.
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