Dieback Disease of Pines with Special Reference to Corsican Pine Pinus nigra var. Calabrica Schn: III. Mycological Factors |
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| Authors: | READ D J |
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| Institution: | Botany Department, The University Hull1 |
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| Abstract: | The fungus Brunchorstia pinea Karst. v. H. is found to be consistentlyassociated with early stages of dieback disease in a numberof pine species. Inoculation of buds with conidial suspensions of the funguscauses typical disease symptoms to develop. The proportion ofsuccessful inoculations depends on the time of year, the locationof the tree, and its physiological condition. Vigorous treesare able to avoid infection, while weaker trees are very susceptibleto attack. It is suggested that though infection depends on low host resistance,Brunchorstia must be considered a primary pathogen since inall probability trees would survive and produce a crop wereit not for the activities of the fungus. |
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