Grain nutritional characterization of 50 Cuban maize accessions
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Abstract
50 yellow maize accessions collected in some farms from three
regions of Cuba (western, center and east). Thus, the following
characters were tested: ash, oil, total sugar, nitrogen, lysine
and triptophan contents (%), at the International Breeding
Center of Maize and Wheat (CIMMYT) in Mexico. As a result,
standard values of ash, oil, sugar and lysine were obtained;
however, with regard to sugar content, three accessions were
notable. Concerning triptophan content, 76 % accessions have
shown relatively high values, even when compared to some
high-quality protein maize (QPM), which explains that 74 % of
the overall population evaluated has a relatively high quality
index surpassing a standard variety used as control, and even
seven accessions overcome QPM evaluative reports in another
region. This is an encouraging result, since it permits to draw
up several strategies for improving the nutritional quality of
some accessions, to be further applied to feed target
populations and animals of interest. Also, significant
correlations were recorded at the population studied. On the
other hand, accessions were scattered when a Main Component
analysis was made, so that accessions splitted up from others
according to the characters having a decisive influence on
maize nutritional quality.
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