Apomixis in Angiosperms: Nucelar and Integumentary Embryony

Description

Apomixis in Angiosperms: Nucellar and Integumentary Embryony is based on original cytoembryological data and critically reviewed literature on more than 250 species from 57 families of angiosperms. The book covers the complete process of nucellar and integumentary embryo formation and viable seed development within species, families, and among angiosperms in general. Many species (some of which are economically important) characterized by adventive embryony are listed. The book also provides an original simple classification of apomixis and offers a new approach to differentiating embryological structures in cases of apomixis and amphimixis. Apomixis in Angiosperms: Nucellar and Integumentary Embryony will be a useful reference for embryologists, botanists, cytologists, geneticists, and plant breeders. It will also benefit any researcher interested in studying somatic embryo formation in tissue culture Content: GENERAL ASPECTS. HISTORICAL BACKGROUND. STRUCTURAL AND FUNCTIONAL ASPECTS OF NUCLEAR AND INTEGUMENTARY EMBRYONY. Material and Methods of Research. Microsporogenesis, Microgametogenesis and Mature Pollen Grains. Megasporogenesis, Megagametogenesis and Mature Embryo Sacs. Double Fertilization. Endospermogenesis. Initial Cells of Nucellar and Integumentary Embryos=Embryocytes. Mitosis of Embryocytes (Sarcococca Humilis). Development of Sexual and Asexual Embryos. Polyembryony. Theoretical Grounds for Nucellar and Integumentary Embryony. Adventive Embryos and Embryoids. OCCURRENCE OF NUCELLAR AND INTEGUMENTARY EMBRYONY. Occurrence of Nucellar and Integumentary Embryony in the System of Flowering Plants. Nucellar and Integumentary Embryony within Families, Genera and Species of Flowering Plants. Evolutionary Significance of Nucellar and Integumentary Embryony. APOMIXIS AND AMPHIMIXIS IN SEED REPRODUCTION OF FLOWERING PLANTS: CLASSIFICATION. A LIST OF SPECIES WITH NUCELLAR AND INTEGUM ENTARY EMBRYONY. REFERENCES.