Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 163

When additive gene action predominates in a cross pollinated species, recurrent selection may be used to achieve general combining ability (GCA). Specific breeding products to pursue include synthetic varieties and composites. In case of non‐additive gene action, heterosis breeding, just like in self‐pollinated species, is recommended for breeding hybrid cultivars. Alternatively, breeders may consider recurrent selection for specific combining ability (SCA) for population improvement. Where both additive and non‐additive gene action occurs together, reciprocal recurrent selection may be used for population improvement.