16. Natural Hybridization

Chapters in this book

1. Frontmatter I
2. Contents VII
3. Preface XI
4. Part One. Populations and Races
5. 1. Plant Reproduction 1
6. 2. Local Races 18
7. 3. Geographical Races 30
8. Part Two. The Nature of Species
9. 4. The Biological Species 43
10. 5. Species Units in Uniparental Plants 64
11. 6. The Species Situation in Plants 70
12. 7. Types of Species 77
13. Part Three. Genetic and Ecological Aspects of Species
14. 8. The Genetic Basis of Species Differences 95
15. 9. Isolating Mechanisms 111
16. 10. Ecological Interactions 118
17. 11. Patterns of Fertility Relationships 124
18. Part Four. Evolutionary Divergence
19. 12. Modes of Speciation 147
20. 13. Primary Speciation 153
21. 14. Chromosome Repatterning in Speciation 170
22. 15. Selection for Reproductive Isolation 178
23. Part Five. Natural Hybridization and its Products
24. 16. Natural Hybridization 191
25. 17. Introgression 205
26. 18. The Syngameon 234
27. 19. Hybrid Speciation 242
28. 20. Recombinational Speciation 256
29. 21. Hyrbrid Complexes 272
30. Part Six. Polyploidy
31. 22. Polyploidy: Range and Frequency 281
32. 23. Types of Polyploids 298
33. 24. Factors Promoting Polyploidy 307
34. 25. The Polyploid Complex 324
35. 26. Natural Autopolyploids 347
36. Part Seven. Aneuploidy
37. 27. Aneuploidy 355
38. 28. Agmatoploidy 369
39. Part Eight. Specialized Genetic Systems
40. 29. Permanent Translocation Heterozygosity 377
41. 30. Permanent Odd Polyploidy 401
42. 31. Agamospermy 413
43. 32. The Agamic Complex 434
44. 33. Vegetative Propagation of Hybrids 462
45. 34. Natural Triploids 473
46. Part Nine. Conclusions
47. 35. Species and Macroevolution 479
48. Bibliography 489
49. Organism Index 541
50. Author Index 553
51. Subject Index 561