The new edition of Seeds contains new information on many topics discussed in the first edition, such as fruit/seed heteromorphism, breaking of physical dormancy and effects of inbreeding depression on germination. New topics have been added to each chapter, including dichotomous keys to types of seeds and kinds of dormancy; a hierarchical dormancy classification system; role of seed banks in restoration of plant communities; and seed germination in relation to parental effects, pollen competition, local adaption, climate change and karrikinolide in smoke from burning plants. The database for the world biogeography of seed dormancy has been expanded from 3,580 to about 13,600 species. New insights are presented on seed dormancy and germination ecology of species with specialized life cycles or habitat requirements such as orchids, parasitic, aquatics and halophytes. Information from various fields of science has been combined with seed dormancy data to increase our understanding of the evolutionary/phylogenetic origins and relationships of the various kinds of seed dormancy (and nondormancy) and the conditions under which each may have evolved. This comprehensive synthesis of information on the ecology, biogeography and evolution of seeds provides a thorough overview of whole-seed biology that will facilitate and help focus research efforts.
Chapter 1. Introduction Purpose Seed Germination Ecology A Book on Seed Dormancy and Germination from a Different Perspective Chapter 2. Ecologically Meaningful Germination Studies Purpose Definition of Seed Dormancy Guidelines for Laboratory Studies on Germination Ecology Germinating Seeds You Know Nothing About Chapter 3. Types of Seeds and Kinds of Seed Dormancy Purpose Types of Seeds Classification of Seed Dormancy Overview of Classes of Seed Dormancy Chapter 4. Germination Ecology of Seeds with Nondeep Physiological Dormancy Purpose Discovery of Dormancy Cycles Changes in the State of Dormancy The Dormancy Continuum Environmental Factors Causing Changes in Dormancy States Chapter 5. Germination Ecology of Seeds with Morphophysiological Dormancy Purpose Levels of Morphophysiological Dormancy