Jointly published with INRA, Paris. The use of haploid plants is of increasing importance in plant biology and plant breeding. This book illustrates how the advances in plant molecular and cell biology provide an exciting means for the analysis of androgenesis in terms of pollen development and the initiation of embryogenesis. It provides both an appraisal of techniques and their practical application, and is the most up-to-date source of information about the biology of gametophytes.