Diversity and conservation of Elm (Ulmus) genetic resources in Bulgaria

Petar Zhelev, Nikolay Stoyanov, Nikolay Tsvetanov, Dimiter Ivanov, Slavcho Savev, Ina Aneva
2021 Zenodo  
Elms (Ulmus spp.) are highly valuable and important forest trees facing the risk of decline and genetic erosion due to the Dutch Elm disease. The natural genetic resources of Ulmus species in Bulgaria have deteriorated substantially during the second half of the 20th century. The main reason for the decline can be attributed to the Dutch Elm disease, but the human impact also contributed by destroying natural forests and habitats. We present a current evaluation of Elm species' genetic
more » ... s' genetic resources and a survey on their gene conservation, management, and gaps of knowledge. The analysis is based on an established interactive database. A special indicator, reduced area, was derived by considering the share of Ulmus species in the stands. The most widely distributed species occupying larger area is Ulmus minor, with a reduced area of 7145 ha, followed by Ulmus laevis (1630 ha) and Ulmus minor (292 ha).
doi:10.5281/zenodo.4662050 fatcat:prkktg3bkneepm6lnzr3ozjlvu