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Molecular marker-assisted breeding options for maize improvement in Asia

Autor: Prasanna, B.M.
Autor: Pixley, K.V.
Autor: Warburton, M.L.
Autor: Chuan-Xiao Xie
Año: 2010
ISSN: 1380-3743
Resumen: Maize is one of the most important food and feed crops in Asia, and is a source of income for several million farmers. Despite impressive progress made in the last few decades through conventional breeding in the ?Asia-7? (China, India, Indonesia, Nepal, Philippines, Thailand, and Vietnam), average maize yields remain low and the demand is expected to increasingly exceed the production in the coming years. Molecular marker-assisted breeding is accelerating yield gains in USA and elsewhere, and offers tremendous potential for enhancing the productivity and value of Asian maize germplasm. We discuss the importance of such efforts in meeting the growing demand for maize in Asia, and provide examples of the recent use of molecular markers with respect to (i) DNA fingerprinting and genetic diversity analysis of maize germplasm (inbreds and landraces/OPVs), (ii) QTL analysis of important biotic and abiotic stresses, and (iii) marker-assisted selection (MAS) for maize improvement. We also highlight the constraints faced by research institutions wishing to adopt the available and emerging molecular technologies, and conclude that innovative models for resource-pooling and intellectual-property-respecting partnerships will be required for enhancing the level and scope of molecular marker-assisted breeding for maize improvement in Asia. Scientists must ensure that the tools of molecular marker-assisted breeding are focused on developing commercially viable cultivars, improved to ameliorate the most important constraints to maize production in Asia.
Lenguaje: English
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Tipo: Article
Región: East Asia
Región: South Asia
Región: Southeast Asia
Paginas: 339-356
No de Revista: 2
Revista: Molecular Breeding
Volumen de la Revista: 26
DOI: 10.1007/s11032-009-9387-3
Palabras Claves: Maize
Palabras Claves: Breeding
Palabras Claves: Markers
Palabras Claves: Genetic diversity
Palabras Claves: QTL
Palabras Claves: Stress resistance
Palabras Claves: Quality

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  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech

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