Selection of apple-tree on poliploid levels

Abstract

Aims. To work out new methods changes of heredity, that would give an opportunity in a greater scale to induce mutational and recombination changeability. Methods. Cytologic research on the generally accepted methodology. Results. Through the study of diploid – tetraploid chimeras derived from experimental mutagenesis, the number of violations found in the different phases of meiosis. Characterized some diploid – tetraploid chimeras with valuable economic and biological traits.

Key words: feedstock, polyploidy, chromosomes, meiosis, gametes, chimeras, microsporogenesis, macrosporogenesis.