White Maize: Genetics of Quality and Agronomic Performance

White maize (Zea mays L.) is preferred for human consumption, but little is known about the genetic regulation of flour quality, and the potential value of genotypes adapted to temperate areas has not been reported. The objectives of this work were to assess the potential value of flint white maize...

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Bibliographic Details
Published in:Crop science 2008-07, Vol.48 (4), p.1373-1381
Main Authors: Malvar, R.A, Revilla, P, Moreno-González, J, Butron, A, Sotelo, J, Ordas, A
Format: Article
Language:English
Subjects:
agronomic traits
Agronomy. Soil science and plant productions
Biological and medical sciences
Bread
Corn
density
dent corn
flint corn
food quality
Fundamental and applied biological sciences. Psychology
gene interaction
Genetic effects
genetic variation
Genetics
Genetics and breeding of economic plants
genotype
Genotype & phenotype
Genotypes
grain yield
Hybrids
inbred lines
Industrialized nations
milling quality
Moisture content
plant adaptation
white corn
Zea mays
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Summary:White maize (Zea mays L.) is preferred for human consumption, but little is known about the genetic regulation of flour quality, and the potential value of genotypes adapted to temperate areas has not been reported. The objectives of this work were to assess the potential value of flint white maize inbreds from northwestern Spain and to determine the genetic effects of quality. A diallel among flint and dent white inbred lines was evaluated in northwestern Spain, and generation mean analyses were performed for three crosses representing flint by flint, dent by dent, and flint by dent combinations. Dent x dent hybrids had low density. Considering grain yield and density together, the best hybrids were EP64 x K301, EP71 x K301, and EC22 x Mo20W, which had poor milling test values, and high proportions of whole kernels. Considering the relative importance of nonadditive genetic effects, the final goal of breeding programs should be to obtain hybrids. Both additive and nonadditive genetic effects have to be taken into account to improve any of these traits in the flint genetic background. Moreover, it will be difficult to improve kernel density and proportion of whole kernels in any genetic background.
ISSN:0011-183X
1435-0653
DOI:10.2135/cropsci2007.10.0583