Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 103

Plant breeders manipulate plants based on the modes of their reproduction (i.e. self‐ or cross‐pollinated). Self‐pollinated plants are pollinated predominantly by pollen grains from their own flowers, whereas cross‐pollinated plants are predominantly pollinated by pollen from other plants. These different reproductive behaviors have implications in the genetic structure of plant populations. In addition to understanding Mendelian genetics, plant breeders need to understand changes in gene frequencies in populations. After all, selection alters the gene frequencies of breeding populations. After studying this chapter, the student should be able to:

1 Define a population.

2 Discuss the concept of a gene pool.

3 Discuss the concept of gene frequency.

4 Discuss the Hardy‐Weinberg law.

5 Discuss the implications of the population concept in breeding.

6 Discuss the concept of inbreeding and its implications in breeding.

7 Discuss the concept of combining ability.