DIFERENCIAS GENOTÍPICAS EN EL COLOR DEL GRANO DE MAÍZ Y FECHA DE SIEMBRA

GERDE JOSE A.; BORRÁS LUCAS; SAENZ, EZEQUIEL

Pergamino

Congreso; XI Congreso Nacional de Maíz: Sea maíz integrando ciencia, producción, ambiente y comunidad; 2018

A.I.A.N.B.A. - Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires

There is limited information about Argentinean maize grain color and how contrasting crop environments impact on this trait. We explored the effects of delaying maize sowing dates from September-October to December on maize grain color in the Argentinean central temperate area. Thirteen commercial genotypes were sown during two growing seasons and two sowing dates. Measured traits were HunterLab color dimensions (L, a, and b), chroma (C) and hue angle (h°). Effects genotype, planting date, and genotype x planting date interaction were significant for all tested traits (p < 0.05). Maize grain color was less saturated and more yellow when sowing date was delayed for most genotypes.These results show that, although genotype is the main determinant, grain color is also influenced by the crop environment. Further studies will allow to unravel the relationship between color and grain pigment concentration.