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Taubert, Jasmin (2008) Temperature requirement for germination of conidiospores and growth of mycelia of Heterobasidion annosum s.s. and Heterobasidion parviporum. Other thesis, SLU.

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Abstract

Different temperature requirements of the two species Heterobasidion annosum (Fr.) Bref. (P group) and H. parviporum Niemelä & Korhonen (S group) should explain why the distribution areas are different in Scandinavia despite of a wide range of distribution of their host species Picea abies and Pinus sylvestris up to 68°N. Temperature ranges of P and S were observed. Germination percent, length of the germination tubes of the conidiospores and growth rate of the mycelia were measured for 6 individual strains of the S and P group, respectively. When sampled, mycelial strains of the S group showed a significantly faster growth rate at 22°C compared to the strains of the P group. Germination percent and length of the germination tubes of the conidiospores were insignificant at all temperatures. In conclusion, growth rate of the S group increased with temperature until 27°C and increase of the growth rate of the P group stagnated after 22°C. The S group had a wider temperature range than the P group.

Item Type: Thesis (Other)
Keywords: Conidiospores, germination, growth, Heterobasidion annosum, H. parviporum, temperature
Subject (faculty): Faculty of Forest Sciences > Southern Swedish Forest Research Centre
Divisions: SLU > Faculty of Forest Sciences
Depositing User: Violeta Kokos
Date Deposited: 06 Oct 2008
Last Modified: 18 Aug 2015 10:08
URI: http://ex-epsilon.slu.se/id/eprint/2863

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