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This book deals with the theoretical background and breeding methods of the single dominant male sterile gene, a spontaneous mutant discovered for the first time in wheat.The book is divided into three sections: the discovery of Taigu genic male-sterile wheat and its determination, such as genetic analysis, cytological observation, location of the gene, etc.; theory and method of the new way of breeding, such as recurrent selection, creating and developing the gene-pool; mechanism of male-sterility, for example morphological anatomy, cytochemistry and bio-chemical analysis.The book will prove valuable to plant breeders, agronomists, bio-technicians, botonists, geneticists and cytologists.

This authoritative work has been written by a man whose career as an active wheat geneticist has spanned sixty years and has earned him a world-wide reputation. The book contains descriptions and much original data on genetical and cytogenetical findings concerning cultivated wheats and their relatives. It covers chromosomal analyses, genome analyses, ancestors of wheat, artificial synthesis of wheat, evidence of cytoplasmic inheritance and variations of wild species. The author explains how these facts and concepts have been discovered, points out the importance inherent in these discoveries, and shows how they can be utilized in genetical and breeding studies. Special emphasis is placed on the motives, processes and development of the studies.