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Characterization on Fatty Acids and Amino Acids of Quality Protein Maize Lines  

Kim Sun-Lim (National Institute of Crop Science, RDA)
Son Beom-Young (National Institute of Crop Science, RDA)
Jung Tae-Wook (National Institute of Crop Science, RDA)
Moon Hyun-Guey (National Institute of Crop Science, RDA)
Son Jong-Rok (National Institute of Crop Science, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.51, no.5, 2006 , pp. 458-465 More about this Journal
Abstract
This study was carried out to evaluate the nutritional properties of quality protein maize (QPM) and to select the elite lines for corn breeding. Two laboratory procedures for simultaneous identification of QPM and lysine content analysis were performed. The $BC_{1}F_{2}$ lines of KS5/QPM and KS135/QPM were analyzed with opaque-2(o2) specific SSR marker in order to differentiate the opaque-2 carrying QPM lines from the non-opaque genotypes. Although no significant difference in protein content, significant differences in lipid, ash, and crude fiber contents were observed. The composition of unsaturated fatty acid of QPM lines was slightly lower than non-QPM lines, but there was no significant difference. Sulphur-containing amino acids such as methionine and cystine showed no difference between QPM and non-QPM lines. However, lysine content of QPM lines was 38% higher than that of non-QPM lines, and the essential amino acid content of QPM lines (28.1%) was higher compared to non-QPM lines (27.1%).
Keywords
QPM; protein; fatty acid; amino acid; lysine;
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