KESER?, Zsolt – BALLA, Ildikó – ANTAL, Borbála – RéDEI, Károly:Micropropagation of Leuce-poplars and evaluation of their development under sandy site conditions in Hungary

摘要

Leuce-poplars are a native stand-forming tree species throughout Hungary. Several speciesor selections of them are used as ornamental plants in parks or to line streets and highways. Theycover approximately 4.0 per cent of the total forested area in Hungary (70 000 ha). The white (grey)poplar belongs to the Leuce poplars and plays a significant role in sand fixation, regional forestation,and nature conservation. The National Agricultural Research and Innovation Centre, Forest ResearchInstitute or NARIC-FRI (formerly known as the Forest Research Institute) is involved in long-termbreeding work for the selection of fast-growing white poplar trees under dry conditions. In vitromultiplication of trees is applied mainly to fruit growing trees in Hungary; in forestry research it isused primarily for selective breeding. This paper presents a short overview of the most importantissues concerning the biotechnology of different Populus species, the related research onmicropropagation trials, and the results of field investigations of micropropagated Leuce-poplar cloneexperiments.