01593nas a2200157 4500008004100000245013100041210007000172260001600242300001100258490000700269520094800276100002001224700001701244700001301261856016101274 2016 eng d00aVariation in Alnus glutinosa susceptibility to Phytophthora ×alni infection and its geographic pattern in the Czech Republic0 aVariation in Alnus glutinosa susceptibility to Phytophthora ×aln cJan-02-2016 a3 - 100 v463 a

Variation in natural susceptibility of the black alder population to Phytophthora ×alni (PA), the oomycete pathogen causing a devastating disease of alder, and its possible relationship to geographic origin, was studied in vitro using branch inoculation tests. Ninety black alder genotypes from different regions of the Czech Republic and two isolates of PA were employed. Host susceptibility varied significantly. After 1 week of infection, the lesion surface areas ranged from 254 to 2051 mm2 and from 19 to 970 mm2 for the two isolates, respectively. The differences were also dependent on the geographical origin and altitude of the sites from which particular host genotypes were taken. These findings have important implications for restoration plantings and for PA resistance breeding programmes, as there is potential to make selections from natural populations.

1 aŠtochlová, P.1 aNovotná, K.1 aCerny, K uhttp://doi.wiley.com/10.1111/efp.2016.46.issue-1http://doi.wiley.com/10.1111/efp.12205http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fefp.12205