Investigations were previously carried out to compare eight strains of Serpula lacrymans (Schum. ex Fr.) S.F. Gray (some used in various countries as standard test strains): FPRL 12C (England), FPRL 12E (Germany), Warsaw III (Poland), HFP 7802 (Japan), DFP 16508, 16509, 16521 and 16522 (Australia). Studies included growth rate and dry mass of mycelium, decay capacity, reduction of compression strength, toxic values of CCA and NaPCP tested with agar-plate method (ED50, ED100, LD100) and a modified agar-block method using mass-loss and reduction of compression strength criteria. All of the data obtained are presented here together for the first time, in both table and graphic formats. Further comparison between these results will be presented later (in the final part of the series in 'Holzforschung').

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