Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 126

Genetic assortative mating or inbreeding entails mating individuals that are closely related by ancestry, the closest being selfing (self‐fertilization). A genetic consequence of genetic assortative mating is the exposure of cryptic genetic variability that was inaccessible to selection and was being protected by heterozygosity (i.e. heterozygous advantage). Also, repeated selfing results in homozygosity and brings about fixation of types. This mating system is effective if the goal of the breeder is to develop homozygous lines (e.g. developing inbred lines for hybrid seed breeding or development of synthetics).