Tropical Plant Biology

, Volume 5, Issue 1, pp 73–87

Cassava Breeding: Current Status, Bottlenecks and the Potential of Biotechnology Tools

Article

DOI: 10.1007/s12042-012-9094-9

Cite this article as:
Ceballos, H., Kulakow, P. & Hershey, C. Tropical Plant Biol. (2012) 5: 73. doi:10.1007/s12042-012-9094-9
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Abstract

Cassava is an important energy source in the diets of millions of people in tropical and subtropical regions of the world. It is a key subsistence crop, and its industrial uses are steadily growing. In spite of its economic and social relevance, relatively little investment has been made for research on cassava. However, conventional breeding resulted in more stable production through enhanced tolerance to biotic and abiotic stresses; increased productivity, both in fresh root production and increased dry matter content; and, more recently, improvements in qualitative traits such as starch quality and increased carotenoids content. The inbreeding of cassava has been identified as a key step for more efficient genetic improvement of the crop, therefore, research is underway to develop protocol(s) for the production of doubled haploids. Marker-assisted selection has been successfully applied to cassava, but in a more modest scale compared with other crops. More support and emphasis is needed on practical applications of molecular marker technology in cassava improvement. The availability of more efficient genotyping approaches and the cassava genome sequence promise to increase the impact of biotechnology tools on cassava improvement. Efficient and reliable phenotyping of cassava remains a challenging goal to achieve in the near future.

Keywords

Phenotypic recurrent selectionHeterosisGenetic variabilityBiotic and abiotic stressesIndustrial uses

Abbreviations

AYT

Advanced yield trial

CBSD

Cassava Brown Streak Disease

CET

clonal evaluation trial

CMD

Cassava Mosaic Disease

DMC

dry matter content

FSD

Frogskin Disease

LAC

Latin America and the Caribbean

MAS

marker-assisted selection

PPD

post-harvest physiological deterioration

PYT

preliminary yield trial

QTL

quantitative trait loci

RT

regional trial

TILLING

Targeted Induced Local Lesions in Genome

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Hernán Ceballos
    • 1
    • 3
  • Peter Kulakow
    • 2
  • Clair Hershey
    • 1
  1. 1.Centro Internacional de Agricultura Tropical (CIAT)CaliColombia
  2. 2.International Institute of Tropical Agriculture (IITA)IbadanNigeria
  3. 3.Universidad Nacional de Colombia – Palmira CampusPalmiraColombia