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Effectiveness of selection at CIMMYT's main maize breeding sites in Mexico for performance at sites in Africa and vice versa

Author: Makumbi, D.
Author: Kebede, A.Z.
Author: Mahuku, G.
Author: Burgueño, J.
Author: San Vicente, F.
Author: Cairns, J.E.
Author: Das, B.
Author: Makumbi, D.
Author: Magorokosho, C.
Author: Windhausen, V.S.
Author: Melchinger, A.E.
Author: Atlin, G.N.
Year: 2013
ISSN: 0179-9541
Abstract: The exchange of elite breeding materials across regions is an important way in which multinational maize breeding programmes access new genetic variation, improve efficiency and reduce costs. Our objectives were to examine whether CIMMYT's breeding programmes for tropical and subtropical environments in Mexico and Eastern and Southern Africa (ESA) can effectively share materials. Sets of selected and unselected lines were evaluated for per se and testcross performance in multiple environments in Mexico and ESA for grain yield, days to anthesis and plant height. Genotypic correlations between performance in Mexico and ESA as testcross and line per se were high (≥ 0.72) for all experiments, and indirect selection efficiency ranged from 67 to over 100% for all traits. Lines selected in ESA or Latin America performed equally well in each region, indicating selection was for broad rather than regional adaptation. Thus, breeding programmes of CIMMYT in both Mexico and ESA can benefit tremendously by exchanging breeding materials and test results, and elite selections from each region should be fast-tracked for evaluation in the other.
Language: English
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Country: Mexico
Country: Africa
Pages: 299-304
Journal issue: 3
Journal: Plant Breeding
Journal volume: 132
DOI: 10.1111/pbr.12063
Keywords: Maize
Keywords: breeding material exchange
Keywords: regional adaptation
Keywords: double haploids
Keywords: genotypic correlation
Keywords: indirect selection efficiency
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This item appears in the following Collection(s)

  • Genetic Resources
    Genetic Resources including germplasm collections, wild relatives, genotyping, genomics, and IP
  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech

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