Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize

ANTONIETTA M.; ACCIARESI H.; GUIAMET J.J.

JOURNAL OF AGRONOMY AND CROP SCIENCE

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2016 vol. 202 p. 231 - 242

0931-2250

Breeding has developed better yielding maize hybrids for low N environments which also have delayed leaf senescence (?stay green? trait, SG). Here, we studied if the SG trait can further improve yield of modern hybrids under N-limiting conditions. In two field experiments, four maize hybrids with different senescence behavior were grown under three N fertilization levels, from 0 to 200 kg N ha-1 (N0, N100 and N200). After silking, hybrids differed for senescence depending on the canopy layer (P