Maize quality breeding in Argentina. II: Determination of lysine and fatty acids by chromatography

CORCUERA, VR; GIRAUDO, M; BERNATENE, EA; SANCHEZ TUERO, H Y MARCOWSKI, I.

Maize Genetics Cooperation Newsletter

University of Illinois

Lugar: Illinois; Año: 2007 vol. 81 p. 19 - 20

1090-4573

Normal genotypes previously developed in Argentina were reconverted to quality protein maize through the incorporation of the o2, o5, o11 or o12 genes from Illinois and Bergamo inbreds used as donors. Lysine content in endosperm flour of three inbreds and a single cross has been determined via rp-HPLC. All inbreds and single cross hybrids studied showed very low levels of eicosenoic and linolenic acid. The levels of myristic, palmitic, heptadecanoic and arachidic acids found in the single cross 3257 (see Table 3), obtained after crossing the inbreds 3096b (??) x 3135a (??), show maaternal inheritance. In contrast, the levels of oleic, linoleic and linolenic acids are paternally inherited. On the other hand, the stearic acid content of the hybrid does not differ significantly from the mid-parent value, showing additive inheritance.