1. The definition of a potato variety 2. Historical sketch of the development of present-day varieties 3. The life of a variety 4. The methods of producing new varieties 5. The application of genetics to variety 6. The technique of hybridization 7. The classification of varieties 8. Classificatory guide 9. Correlations of linkages 10. Varietal differences of maturity 11. The yield or crop of the potato, and the genetic factors affecting the same 12. The yield or crop of the potato, and the environmental factors affecting the same 13. Yield trials 14. Varietal differences in the production of ware 15. Varietal differences and their basis on chemical and histological characters of the tuber 16. Differential histological features of the tuber 17. Varietal resistance to disease 18. Virus diseases and varietal resistance to their infection 19. Degenerative changes of unknown origin 20. Varietal differences in respect to extremes of temperature 21. The adaptations of varieties to special conditions of soil and climate 22. Synonymity 23. The leaf index 24. Varietal descriptions 25. Common employment of the varieties described 26. Descriptions of varieties with their history and synonyms Appendix I. Blank varietal description forms Appendix II. A yeild test conducted by the N.I.A.B. investigated statistically by W. H. Parker, M.A. Appendix III. The origin of Messrs Sutton and Sons' varieties during the last half century Bibliography Index.
1. The definition of a potato variety 2. Historical sketch of the development of present-day varieties 3. The life of a variety 4. The methods of producing new varieties 5. The application of genetics to variety 6. The technique of hybridization 7. The classification of varieties 8. Classificatory guide 9. Correlations of linkages 10. Varietal differences of maturity 11. The yield or crop of the potato, and the genetic factors affecting the same 12. The yield or crop of the potato, and the environmental factors affecting the same 13. Yield trials 14. Varietal differences in the production of ware 15. Varietal differences and their basis on chemical and histological characters of the tuber 16. Differential histological features of the tuber 17. Varietal resistance to disease 18. Virus diseases and varietal resistance to their infection 19. Degenerative changes of unknown origin 20. Varietal differences in respect to extremes of temperature 21. The adaptations of varieties to special conditions of soil and climate 22. Synonymity 23. The leaf index 24. Varietal descriptions 25. Common employment of the varieties described 26. Descriptions of varieties with their history and synonyms Appendix I. Blank varietal description forms Appendix II. A yeild test conducted by the N.I.A.B. investigated statistically by W. H. Parker, M.A. Appendix III. The origin of Messrs Sutton and Sons' varieties during the last half century Bibliography Index.
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