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The aggressiveness of Sphaeropsis sapinea on Austrian pine varies with isolate group and site of infection

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The aggressiveness of the A and B isolate groups (morphotypes) of Sphaeropsis sapinea on shoot tips and lower stems of Austrian pine (Pinus nigra) was compared. The distinct differences in aggressiveness between the two S. sapinea groups, previously reported for other conifers, are confirmed for Austrian pine. However, the relative aggressiveness of the B group isolate varied by site of infection. Although the B group isolate of S. sapinea was not aggressive on shoot tips of Austrian pine, it was aggressive on stems of this host.

Document Type: Research Article


Affiliations: Department of Plant Pathology, The Ohio State University, Columbus, OH 43210, USA. ;, Email:

Publication date: 2003-02-01

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