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Chittaranjan Kole Department of Horticulture 316 Tyson Building The Pennsylvania State University University Park, PA 16802 USA

e-mail: [email protected]

Library of Congress Control Number: 2006933735

ISBN-13 978-3-540-34535-0 Springer Berlin Heidelberg New York

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Editor: Dr. Sabine Schreck, Heidelberg, Germany Desk Editor: Dr. Jutta Lindenborn, Heidelberg, Germany Cover design: WMXDesign GmbH, Heidelberg, Germany

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