Background and Purpose: Common ash (Fraxinus excelsior L.) is a species with a widespread distribution in Europe. It mostly grows on mesophyll sites, mainly in karst valleys and by forest creeks, and in Herzegovina at northern expositions and higher altitudes with somewhat better types of soil. Materials and Methods: We studied 10 natural populations. We collected dormant buds with branches fro...

Abstract The existence of European ash ( Fraxinus excelsior L.) is threatened by fungus-induced dieback. It essential to find effective methods multiply genotypes resistant dieback while preserving the genetic diversity these tree populations. In this paper efficient method for production seedlings using indirect auxiliary organogenesis with multi-factor analysis its effectiveness presented. Pr...

The ongoing fragmentation of ash populations due to dieback requires an effective gene flow between individuals; thus, investigations on pollen transport are essential. In this study, comprehensive aerobiological field experiments at two seed plantations in Baden-Württemberg were conducted 2019 and 2020 order study the influence phenology meteorology (especially wind) using self-constructed gra...

Emerald ash borer (EAB), Agrilus planipennis, is a phloem-boring beetle, native to East Asia that has become serious invasive pest of (Fraxinus spp.) trees in North America and European Russia since the early 2000s. In 2019, EAB was detected Ukraine. It had spread over 300 km from entry point two years killed hundreds Fraxinus excelsior F. pennsylvanica trees. poses threat forests neighboring c...