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Résumé :
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Over the last 20 years, powdery mildews have been investigated by an increasing number of specialists from diverse fields, including chemistry, biochemistry, molecular biology, genetics, morphology, taxonomy, host- parasite interactions, ecology and epidemiology. With such diversity in the recent expansion of knowledge of powdery mildews, only a book combining the econtributions of many scientists in their diverse areas of speciality coul achieve a comprehensive update with the desired level of thoroughness. Accordingly, we solicited manuscripts from the recognized experts from all aspects of research on powdery mildews. To complement Spencer's 1978 book, which includes chapter devoted to powdery mildews of individual crops as well chapters organized by scientific discipline, we chose to concentrate on research areas in which the most dramatic advances have occurred in the last 20 years. We felt this would best add to the earlier work while emphasizing how recent research has advanced our understanding of powdery mildews. Our book comprises 18 chapters, starting with an overview in Chapter 1. Following the overview, the chapters are organized in five sections: The Fungi, Techniques, Host-Parasite Interactions, Populations, and Control. These chapters reflect the increasing complexity and sophistication of man's attempts to manage powdery mildews in the field and glasshouse and summarizing our current understanding of the molecular and physiological basis of alternatives in both susceptible and resistant plants.
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