Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 134

The general goal of improving open or cross‐pollinated species is to change the gene frequencies in the population toward fixation of favorable alleles while maintaining a high degree of heterozygosity. Unlike self‐pollinated species in which individuals are the focus and homozygosity and homogeneity are desired outcomes of breeding, population improvement focuses on the whole group, not individual plants. Consequently, open‐pollinated populations are not homogeneous.