Growth and breeding of aspen in Russia

Researches results are presented that describe variation in natural aspen stands and hybrid collections in Central European Russia. The subject of the study was the selection of the most productive and resistant to heart rot caused by fungus Phellinus tremulae (Fomes

igniarius) stands. Mechanical wood properties, fodder values and other valuable characteristics of aspen are also shown. The valuable stands and hybrids which require conservation were selected for breeding and practical use.