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Accelerated development of quality protein maize hybrid through marker-assisted introgression of opaque-2 allele

Autor: Gupta, H.S.
Autor: Raman, B.
Autor: Agrawal, P.K.
Autor: Mahajan, V.
Autor: Hossain, F.
Autor: Thirunavukkarasu, N.
Año: 2012
ISSN: 0179-9541
URI: http://hdl.handle.net/10883/3181
URI: http://hdl.handle.net/10883/3181
Resumen: Vivek Maize Hybrid 9- a popular single-cross hybrid developed by crossing CM 212 and CM 145 was released for commercial cultivation in India. The parental lines, being deficient in lysine and tryptophan, were selected for introgression of opaque-2 allele using CML 180 and CML 170 as donor lines through marker-assisted backcross breeding. The opaque-2 homozygous recessive genotypes with >90% recovery of the recurrent parent genome were selected in BC2F2, and the seeds with <25% opaqueness in BC2F3 were forwarded for seed multiplication. Vivek Quality Protein Maize (QPM) 9, the improved QPM hybrid, showed 41% increase in tryptophan and 30% increase in lysine over the original hybrid. The grain yield of the improved hybrid was on par with the original hybrid. The newly improved QPM maize hybrid released in 2008 will help in reducing the protein malnutrition because its biological value is superior over the normal maize hybrids. This short duration QPM maize hybrid has been adopted in several hill states of North Western and North Eastern Himalayan regions.
Lenguaje: English
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Tipo: Article
Región: Global
Paginas: 77-82
No de Revista: 1
Revista: Plant Breeding
Volumen de la Revista: 132
DOI: 10.1111/pbr.12009
Palabras Claves: opaque-2
Palabras Claves: Tryptophan
Palabras Claves: marker-assisted introgression
Palabras Claves: Quality protein maize
Palabras Claves: maize hybrid
URI del Editor : http://onlinelibrary.wiley.com/doi/10.1111/pbr.12009/abstract


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

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