Artículos de revistas
Changes of starch composition by postflowering environmental conditions in kernels of maize hybrids with different endosperm hardness
Fecha
2017-05Registro en:
Cirilo, Alfredo Gabriel; Valentinuz, Oscar Rodolfo; Balbi, C.N.; Andrade, Fernando Héctor; Izquierdo, Natalia Gabriela; Cerrudo, Anibal Alejandro; et al.; Changes of starch composition by postflowering environmental conditions in kernels of maize hybrids with different endosperm hardness; Elsevier Science; European Journal of Agronomy; 86; 5-2017; 71-77
1161-0301
CONICET Digital
CONICET
Autor
Martínez, Roberto Dionisio
Cirilo, Alfredo Gabriel
Cerrudo, Anibal Alejandro
Andrade, Fernando Héctor
Reinoso, Luis
Valentinuz, Oscar Rodolfo
Balbi, C.N.
Izquierdo, Natalia Gabriela
Resumen
Starch composition of maize grains is of great importance when used in animal feed and many processing industries. Maize production involves hybrids with different kernel composition and hardness, sown at areas that range from subtropical to temperate cold climates. Therefore, it is relevant to understand how the environment influences starch composition. The objective of this work was to analyze the effect of location and sowing date on starch composition of maize grains. Field experiments were carried out at five locations across the argentinean maize-production area during two growing seasons. At each location, two sowing dates and three hybrids differing in endosperm hardness (i.e. semi-dent, a semi-flint and flint) were evaluated. Late sowing dates reduced amylose percentage and amylose/starch ratio. This last variable increased as latitude decreased. Minimum temperature during effective grain filling period explained those latitude and sowing date effects. This finding would be helpful to estimate starch composition of maize kernels to be expected in order to satisfy specific end uses.