Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 135

The population can be changed by one of two general strategies (i.e. there are two basic types of open pollinated populations in plant breeding) – by population improvement and by development of synthetic cultivars. To develop cultivars by population improvement entails changing the population en masse by implementing a specific selection tactic. A cultivar developed this way is sustainable in a sense, maintaining its identity indefinitely through random mating within itself in isolation. The terminology “synthetic” is used to denote an open pollinated cultivar developed from combining inbred or clonal parental lines. However, the cultivar is not sustainable and must be reconstituted from parental stock. Other usage of the term occurs in the literature.