Grain growth of maize after local application of subzero temperature : thermal properties of ears Jean-François LEDENT, Thierry BOITTE, Isabelle DE KEYZER, Jean-François DETRY, Etienne DUVEILLER and Astrid WAUCQUEZAgronomie, 8 4 (1988) 301-308DOI: https://doi.org/10.1051/agro:19880404