Extended Data Fig. 8: Functional identification of ZmSK1.

a, Correlation analysis between ZmSK1 expression and quinic acid content. b, Correlation analysis between quinic acid content and hundred-kernel weight. c, Correlation analysis between pericarp thickness and hundred-kernel weight. d, Knockout of ZmSK1 by CRISPR-Cas9. Mutants of ZmSK1 are shown. e, Violin plots of hundred-kernel weight between wild type and ZmSK1 knockout lines in 2022. Differences between groups were assessed using a two-tailed unpaired t-test.