One of the aroids, of minor significance, cultivated in S.E. Asia. Almond
See: Prunus amygdalus. Alternaria
This genus is an imperfect fungus (i.e., it has no sexual stage) with an extremely wide host range. Various species of Alternaria cause leaf and fruit spots on citrus, brassicas, flax, potatoes, tomatoes, leeks, onions, and other crops. The spots form concentric rings of colonisation and the disease is often called 'ring-spot' or 'target spot'. It is easy to accumulate horizontal resistance to this fungus and plant breeding clubs should take it into account when breeding many species of vegetables.
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