Conservation and distribution of cassava

Code: 9781838790622
Publication date: 31/08/2017
Extent: 12 pages

Contributions by: Michael Abberton, Badara Gueye, Tchamba Marimagne and Folarin Soyode, International Institute of Tropical Agriculture (IITA), Nigeria

Chapter synopsis: Significant germplasm collections of cassava (Manihot esculenta) have been established in international and regional genebanks and have been used extensively by plant breeders. This chapter describes both ex situ and in situ techniques of conserving cassava genetic material. The chapter demonstrates in detail that approaches to conservation are only rarely through true (botanical) seed but rather as a field collection which is regenerated every two years, as in vitro plantlets or, in the future, cryopreservation. The chapter analyses techniques of data collection and management in genebanks and germplasm distribution. It presents the case having a large potential for in situ conservation approaches with respect to wild relatives of cassava which have hitherto been unrealised.

DOI: 10.19103/AS.2016.0014.14
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Table of contents 1 Introduction 2 Origins and genetic diversity of cassava 3 Ex situ conservation of cassava genetic material 4 Field conservation of cassava genetic material 5 Core collections of cassava genetic material 6 In vitro conservation of cassava genetic material 7 Cryopreservation of cassava genetic material 8 Conservation of cassava genetic material as true seed 9 Data collection and management in genebanks 10 Germplasm distribution 11 In situ conservation of cassava genetic material 12 Molecular genetic studies of cassava diversity 13 Where to look for further information 14 Acknowledgements 15 References

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