Ecophysiology of Vascular Halophytes provides a useful update to existing literature describing the ecophysiological responses of vascular halophytes to environmental stresses present in saline habitats. The success of species growing in these extreme environments is related to a number of adaptations, including the timing of phenological events, phenotypic plasticity and genetic selection for specific ecophysiological responses at different stages of development. Factors discussed that influence the growth and distribution of halophytes include seed germination, salinity stress, salt stimulation, flooding, ion content, nitrogen, plant water status, growth regulators, photosynthesis, and genecology. The book also discusses the effects of both interspecific and intraspecific competition on the growth and survival of halophytes. Researchers and students of stress ecology, as well as agricultural research organizations, will find a tremendous store of information in this volume.
Preface. INTRODUCTION. Significance of Saline Habitats. Literature Review. Outline of Chapters Included in this Book. References. SEED GERMINATION. Introduction. Salt Tolerance. Population Variation. Osmotic Effects. Specific Ion Toxicity. Ionic Content of Seeds. Dormancy. Growth Regulator-Salinity Interactions. Seed Bank. Parental Effects. Conclusions. References. GROWTH. Introduction. Effect of Salinity on Plant Growth. Growth Responses of Species of Atriplex to Salinity. Salt Stimulation of Growth in Salicornia and Suaeda. Ionic Effects and Interactions with Other Factors. Comparative Investigations with Halophyte Taxa. Mycorrhizal Fungi. Phenology. Conclusions. References. PHOTOSYNTHESIS. Introduction. The Effects of Salinity on Assimilation. Biochemical Inhibition. Induction of Change in Carboxylation Pathway. Stable Carbon Isotope Ratios. Field Investigations. Conclusions. References. GROWTH REGULATORS. Introduction. Giberellins. Cytokinins. Auxin and Ethylene. Conclusions. References. PLANT WATER STATUS. Introduction. Field Measurements of Plant Water Potential. Plant Water Status Responses to Salt Stress. Conclusions. References. PLANT IONIC CONTENT. Introduction. Ionic Content of Plants Under Field Conditions. Seasonal and Daily Change in Ionic Content. Ionic Content of Plants in Response to Salinity. Change in Ionic Content with Leaf Age. Conclusions. References. WATERLOGGING. Introduction. The Effect of Flooding on Plant Distribution and Growth. Tolerance to Waterlogging and Related Factors. Conclusions. References. NITROGEN. Introduction. Nitrogen Fertilization Experiments in Salt Marshes. Nitrogen and Halophyte Growth. Nitrogen Fertilization Effects on Spartina alterniflora. Conclusions. References. GENECOLOGY. Introduction. Ecotypic Differentiation. Height Forms in Spartina alterniflora. Origin of Microspecies. Conclusions. References. COMPETITION. Introduction. Interspecific Competition. Intraspecific Competition. Conclusions. References.