Abstract

Aiming at the conservation and improvement of valuable traits and intensified production of Acer pseudoplatanus cv ′Atropurpureum′ planting material for domestic and foreign market, a series of experiments was established to monitor the phenotype expression and stability of the character of purple leaf underside, the study results showed the continuous presence of the analysed character in the progeny of all mother trees, in higher or lower percentages, which can be used as a starting point for mass production of this cultivar, both by generative and vegetative methods.

Key words: cv ′Atropurpureum′, expression, half-sib lines, phenotype stability, purple undersides, seedling production, sycamore maple.