Genetic variation of Picea abies in response to the artificial inoculation of Heterobasidion parviporum.

ABSTRACT: Norway spruce Picea abies is one of Europe's most economically important tree species. However, it is highly susceptible to the root rot fungus Heterobasidion parviporum. Climate change will benefit the pathogen as the tree host is weakened by, e.g., extended drought. Breeding can improve forest health, and several root rot genetic markers are suggested to improve the resistance of Norway spruce. This study aimed to compare the resistance (here defined as necrosis length) of Norway spruce families and genotypes against two strains of H. parviporum under different water availabilities. Our results show that the family and the genotype within the family have an impact on the necrosis length that is related to the aggressiveness of the fungal strains. Under low water cond

SUBMITTER: Durodola B 

PROVIDER: S-EPMC9880357 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature