Section 1. Introduction.- Chapter 1. Diagnostics in plants; T. Lübberstedt.- Chapter 2. Non-DNA biomarkers; Christin Falke.- Section 2. Identification of quantitative trait polymorphisms (QTPs).- Chapter 3. Gene identification: forward genetics; Qing Ji.- Chapter 4. Gene identification: reverse genetics; George Haughn.- Chapter 5. Allele re-sequencing technologies; Torben Asp.- Chapter 6. Association studies; Yongsheng Chen.- Section 3. Validation of QTPs.- Chapter 7. TILLING; Gunter Backes.- Chapter 8. Gene Replacement; Paul Hooykaas, Sylvia de Pater.- Section 4. Conversion of QTPs into Functional Markers.- Chapter 9. SNP genotyping technologies; Bruno Studer.- Chapter 10. INDEL genotyping technologies; Toshihiko Yamada et al.- Chapter 11. Sequencing for genotyping; Rajeev Varshney.- Section 5. Development of Non-DNA Biomarkers.- Chapter 12. Methylation-based markers; Emidio Albertini, Gianpiero Marconi.- Chapter 13. RNA; Stefan Scholten.- Chapter 14. Metabolites; Olga Zabotina.- Section 6. Deposition of Diagnostic Marker information.- Chapter 15. Plant Genetic Databases; Carolyn Lawrence.- Section 7. Statistical considerations.- Chapter 16. Epistasis, QTP x environment interactions, and pleiotropy: value of a FM; Everton Brenner.- Section 8. Applications in plant breeding.- Chapter 17. Parent selection - usefulness; Adel Abdel-Ghani.- Chapter 18. Variety registration and protection; David Lee et al.- Section 9. Examples.- Chapter 19. Maize; Mingliang Xu et al.- Chapter 20. Rice; Yongzhong Xing et al.- Chapter 21. Traits; Birgit Arnholdt-Schmitt, Helia Cardoso.