Jules Janick is the James Troop Distinguished Professor of Horticulture at Purdue University in West Lafayette, IN, USA.

• Contributors ixDedication xiii1. Genetic Resources and Domestication of Macadamia 1Craig M. Hardner, Cameron Peace, Andrew J. Lowe, Jodi Neal, Phillip Pisanu, Michael Powell, Adele Schmidt, Chris Spain, and Kristen WilliamsI. Introduction 4II. Wild Genetic Resources 8III. Germplasm Domestication 32IV. Genetics of Key Scion Selection Traits 56V. Propagation and Rootstock Traits 92VI. Cultivar Utilization 95VII. Summary 105VIII. Acknowledgments 108IX. Literature Cited 1082. Pomegranate: Botany, Horticulture, Breeding 127D. Holland, K. Hatib, and I. Bar-Ya’akovI. Introduction 128II. Taxonomy and Morphology 129III. Origin and Genetic Resources 134IV. Horticulture 141V. Breeding 172VI. Health Benefits 175VII. Concluding Remarks 177VIII. Acknowledgments 178IX. Literature Cited 1783. Daylily: Botany, Propagation, Breeding 193Surinder K. Gulia, Bharat P. Singh, Johnny Carter, and Robert J. GriesbachI. Introduction 193II. Botany 194III. Anatomy and Physiology 196IV. Horticulture 203V. Genetics 207VI. Conclusion 214VII. Literature Cited 2144. Horseradish: Botany, Horticulture, Breeding 221Ashraf Shehata, Richard M.S. Mulwa, Mohammad Babadoost, Mark Uchanski, Margaret A. Norton, Robert Skirvin, and S. Alan WaltersI. Introduction 222II. History 223III. Botany 227IV. Horticulture 234V. Breeding 247VI. Literature Cited 2555. 1-Methylcyclopropene: Mode of Action and Relevance in Postharvest Horticulture Research 263Wendy C. Schotsmans, Robert K. Prange, andBradM.BinderI. Introduction 266II. Ethylene Response Pathway 268III. Physiological Processes Affected 277IV. Side Effects 295V. Summary and Future Research Needs 299VI. Acknowledgments 299VII. Literature Cited 3006. Postharvest Biology and Technology of Cucurbits 315Steven A. Sargent and Donald N. MaynardI. Introduction 316II. Crops 319III. Conclusions 345IV. Literature Cited 3467. Physiological Disorders of Grape: Bunch Stem Necrosis and Early Bunch Stem Necrosis 355Andrea H. Pickering, Ian J. Warrington, and David J. WoolleyI. Introduction 356II. Physiology of Berry Growth and Development 358III. Bunch Stem Necrosis 365IV. Early Bunch Stem Necrosis 382V. Summary and Conclusions 385VI. Literature Cited 3898. Plug Transplant Technology 397Daniel J. CantliffeI. Introduction 397II. Importance of the Plug Industry 400III. Plug Production Technology 401IV. Organic Plug Production 418V. Postharvest Handling of Plugs 420VI. Associated Production Techniques 422VII. Mechanization 425VIII. Conclusions and Prospects 427IX. Literature Cited 4289. A History of Grafting 437Ken Mudge, Jules Janick, Steven Scofield, and Eliezer E. GoldschmidtI. Introduction 438II. Natural Grafting 445III. Historical Evidence 449IV. History of Clonal Rootstocks 475V. Graft Hybrids 478VI. Conclusion 485VII. Literature Cited 487Subject Index 495Cumulative Subject Index 497Contributor Index 523

Jules Janick is the James Troop Distinguished Professor of Horticulture at Purdue University in West Lafayette, IN, USA.

• Contributors ixDedication xiii1. Genetic Resources and Domestication of Macadamia 1Craig M. Hardner, Cameron Peace, Andrew J. Lowe, Jodi Neal, Phillip Pisanu, Michael Powell, Adele Schmidt, Chris Spain, and Kristen WilliamsI. Introduction 4II. Wild Genetic Resources 8III. Germplasm Domestication 32IV. Genetics of Key Scion Selection Traits 56V. Propagation and Rootstock Traits 92VI. Cultivar Utilization 95VII. Summary 105VIII. Acknowledgments 108IX. Literature Cited 1082. Pomegranate: Botany, Horticulture, Breeding 127D. Holland, K. Hatib, and I. Bar-Ya’akovI. Introduction 128II. Taxonomy and Morphology 129III. Origin and Genetic Resources 134IV. Horticulture 141V. Breeding 172VI. Health Benefits 175VII. Concluding Remarks 177VIII. Acknowledgments 178IX. Literature Cited 1783. Daylily: Botany, Propagation, Breeding 193Surinder K. Gulia, Bharat P. Singh, Johnny Carter, and Robert J. GriesbachI. Introduction 193II. Botany 194III. Anatomy and Physiology 196IV. Horticulture 203V. Genetics 207VI. Conclusion 214VII. Literature Cited 2144. Horseradish: Botany, Horticulture, Breeding 221Ashraf Shehata, Richard M.S. Mulwa, Mohammad Babadoost, Mark Uchanski, Margaret A. Norton, Robert Skirvin, and S. Alan WaltersI. Introduction 222II. History 223III. Botany 227IV. Horticulture 234V. Breeding 247VI. Literature Cited 2555. 1-Methylcyclopropene: Mode of Action and Relevance in Postharvest Horticulture Research 263Wendy C. Schotsmans, Robert K. Prange, andBradM.BinderI. Introduction 266II. Ethylene Response Pathway 268III. Physiological Processes Affected 277IV. Side Effects 295V. Summary and Future Research Needs 299VI. Acknowledgments 299VII. Literature Cited 3006. Postharvest Biology and Technology of Cucurbits 315Steven A. Sargent and Donald N. MaynardI. Introduction 316II. Crops 319III. Conclusions 345IV. Literature Cited 3467. Physiological Disorders of Grape: Bunch Stem Necrosis and Early Bunch Stem Necrosis 355Andrea H. Pickering, Ian J. Warrington, and David J. WoolleyI. Introduction 356II. Physiology of Berry Growth and Development 358III. Bunch Stem Necrosis 365IV. Early Bunch Stem Necrosis 382V. Summary and Conclusions 385VI. Literature Cited 3898. Plug Transplant Technology 397Daniel J. CantliffeI. Introduction 397II. Importance of the Plug Industry 400III. Plug Production Technology 401IV. Organic Plug Production 418V. Postharvest Handling of Plugs 420VI. Associated Production Techniques 422VII. Mechanization 425VIII. Conclusions and Prospects 427IX. Literature Cited 4289. A History of Grafting 437Ken Mudge, Jules Janick, Steven Scofield, and Eliezer E. GoldschmidtI. Introduction 438II. Natural Grafting 445III. Historical Evidence 449IV. History of Clonal Rootstocks 475V. Graft Hybrids 478VI. Conclusion 485VII. Literature Cited 487Subject Index 495Cumulative Subject Index 497Contributor Index 523