Heterosis: Reappraisal of Theory and Practice

1 Biometrical Genetics of Heterosis.- 2 Heterosis in Maize: Theory and Practice.- 3 Heterosis and Hybrid Seed Production in Barley.- 4 Hybrid Wheat.- 5 Heterosis and Hybrid Seed Production in Fodder Grass.- 6 Heterosis in Vegetable Crops.- 7 Heterosis in the Tomato.- 8 Heterosis and Hybrid Cultivars in Onions.- 9 Heterosis in Ornamentals.- 10 Heterosis and Intergenomic Complementation: Mitochondria, Chloroplast, and Nucleus.