Use of background traits in elaboration of distinctness, uniformity and stability criteria for breeding achievements description

«OIL CROPS» Scientific bulletin, VNIIMK, 2006, is 2 (135). Differences between background traits for individual plant genotype identification by their phenotypes and for plant breeding value estimation in selection from populations are described. It is shown that background traits with zero genotypic variation are not suitable for breeding genotypes identification but may effectively ensure distinctness of inbred lines, hybrids and varieties plants for their patent protection. It is determined that index method efficiency may be equal to background traits method efficiency only in condition when relation of two characters is described by straight line equitation with zero free term.