Production and growth characteristics of hybrids in the genus Betula: developmental and environmental factors
The data on the growth in height of hybrids between local birches, introduced species, growing in different edaphic conditions are presented. Literature review of the possibility of hybridization and data on artificial hybridization in the genus Betula is provided. Importance of this trend for high-forms in woody plants is noted. The data on the history of hybridization and the opinions of scholars on this issue are given. Statistical processing of the experimental data is made. The data showing the benefits of birch families of specific genetic origin are obtained. On less nutritious soils high-self-fertile forms of birches grow faster.