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Outbreeding Mechanisms in Flowering Plants
Carolyn Leach, Oliver Mayo
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Art-Nr. 01000000003
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An evolutionary perspective from Darwin onwards



In this book both the fitness effects of different breeding systems and plant outbreeding mechanisms, in particular self-incompatibility in all its variety, are reviewed for the first time. ; The integrating factor is Charles Darwin, who with several Central European scientists initiated the modern investigation of both topics. The historical content is designed to demonstrate the development of understanding, the lineage of concepts and lines of investigation. This presentation of the basic historical background permits the incorporation of many detailed mechanisms into this short book.


The authors have condensed hundreds of references very substantially in order to make clear the strong associations between breeding system and fitness. Particular attention is focussed on major unsolved problems, especially the origin of self-incompatibility and the origin of diversity within these systems.


The envisaged readership encompasses academics, research students (from the end of the first degree upwards) and research workers in the plant sciences.


Table of Contents: Preface VII; 1. Introduction 1; 2. The effects of inbreeding and outbreeding 3; 2.1 What Darwin wanted to achieve 3; 2.2 What hampered Darwin 4; 2.3 Darwin?s experimental designs 4; 2.4 Inheritance 8; 2.5 What Darwin achieved 8; 2.6 Inbreeding 9; 2.6.1 Darwin?s evidence 9; 2.6.2 Current evidence 10; 2.7 Genetics of inbreeding depression 11; 3. Means of fertilisation 24; 3.1 Darwin?s evide . 24; 3.2 Current evidence 25; 4. Outbreeding mechanisms 31; 4.1 Origin of self-incompatibility 31; 4.2 Evolution of homomorphic systems 44; 4.2.1 Evolution of gametophytic systems 51; 4.2.1.1 Single locus 51; 4.2.1.2 Multiple locus 62; 4.2.1.3 Breakdown of gametophytic systems 66; 4.2.2 Evolution of sporophytic systems 68; 4.2.2.1 Single locus 71; 4.2.2.2 Multiple locus 78; 4.2.2.3 Breakdown of sporophytic systems 79; 4.2.3 The possibility of polygenic systems 80; 4.3 Evolution of heteromorphic systems 83; 4.3.1 Mechanism of heteromorphic self-incompatibility 86; 4.3.2 Breakdown of heteromorphic systems 91 ; 4.3.3 Enantiomorphy 95; 4.3.4 Monoecy, dioecy, gynodioecy and androdioecy 95; 4.3.4.1 Genetical determination of dioecy 97; 4.4 Comparison of systems 99; 5. Some possibilities for research 101; Appendix 104; References 113; Author Index 135; Genera and species Index 144; Topic Index 146.


bibliografische Angaben: 2005. VIII , 147 pages, 20 figures, 28 tables, paperback.

Verlag: J.Cramer

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