Maize kernel growth at different floret positions of the ear.

Highlights: [•] We investigated the variation of maize kernel growth along the rachis of ear. [•] Three-year field data of two hybrids with contrasting densities were analyzed. [•] Kernel growth rate and grain-filling duration determine kernel weight variation. [•] Maximum kernel water mass varied with position but moisture content was similar. [•] The variation of maximum kernel water mass was related with the variation in final kernel weight. [ABSTRACT FROM AUTHOR]