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Ensuring the genetic diversity of maize and its wild relatives

Code: 9781838791025
Publication date: 09/06/2017
Extent: 48 pages

Contributions by: J. Stephen Smith, Iowa State University, USA; Candice A. C. Gardner, USDA-ARS/Iowa State University, USA; and Denise E. Costich, CIMMYT Germplasm Bank (Maize Collection), Mexico

Chapter synopsis: Genebanks and ex situ collections are essential to conserving maize genetic diversity and enabling global access to those resources. The chapter provides a comprehensive and authoritative review of the key issues facing both in situ and ex situ collections. These issues include better conservation and exploitation of wild varieties and landraces, as well as identifying broader genetic and allelic diversity in Zea and Tripsacum. The chapter includes case studies of the use of exotic germplasm to support breeding of more resilient varieties.

DOI: 10.19103/AS.2016.0001.02
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Table of contents 1 Introduction 2 Global maize cultivation and yield trends 3 Domestication and global spread of maize 4 Genetic diversity in Zea: maize and its wild relatives 5 The importance of genetic diversity in improving maize productivity 6 Case studies of the use of maize genetic diversity in breeding 7 In situ diversity and conservation of maize genetic diversity 8 Ex situ conservation of maize diversity in genebanks 9 Critical issues facing maize genebank curators today and in the immediate future 10 Conclusions 11 References

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