Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 290

These are conservative methods of crossing plants. The primary goal of convergent crossing is to incorporate a specific trait into an existing cultivar without losing any of the existing desirable traits. Hence, one (or several) parents serve as a donor of specific genes and is usually involved in the cross only once. Subsequent crosses entail crossing the desirable parent (recurrent parent) repeatedly to the F₁, in order to retrieve all the desirable traits. A commonly used convergent cross is the backcross (see Chapter 17).