tailieunhanh - ECOSYSTEMS BIODIVERSITY

This is due to the fact that in green leaves, the chlorophylls and carotenoids have a broad absorption band in the 400-500 nm spectral region and blue light does not penetrate very deeply into the leaf tissue, and as a result the fluorescence associated to blue light excitation is mainly generated in the green mesophyll cells close to the leaf`s surface, therefore little absorption occurs. On the other hand, bluegreen and orange excitations are not absorbed by carotenoids and penetrates more deeply into the green leaf mesophyll resulting in a chlorophyll fluorescence being generated deeper inside the leaf, from where on its way towards the leaf surface,. | ECOSYSTEMS BIODIVERSITY Edited by Oscar Grillo and Gianfranco Venora Ecosystems Biodiversity Edited by Oscar Grillo and Gianfranco Venora Published by InTech Janeza Trdine 9 51000 Rijeka Croatia Copyright 2011 InTech All chapters are Open Access distributed under the Creative Commons Attribution license which allows users to download copy and build upon published articles even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech authors have the right to republish it in whole or part in any publication of which they are the author and to make other personal use of the work. Any republication referencing or personal use of the work must explicitly identify the original source. As for readers this license allows users to download copy and build upon published chapters even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials instructions methods or ideas contained in the book. Publishing Process Manager Dragana Manestar Technical Editor Teodora Smiljanic Cover Designer InTech Design Team Image Copyright Yellowj 2010. Used under license from First published December 2011 Printed in Croatia A free online edition of this book is available at Additional hard copies can be obtained from orders@ Ecosystems Biodiversity Edited by Oscar Grillo and Gianfranco Venora p. cm. ISBN .