Fig. 2: High-resolution mapping of the Lna1 locus.

a–c Fine-mapping narrowed down the location of Lna1 within a 195-kb segment between M9 and M11 on chromosome 4. The blue, green and cyan bars represent the homozygous Popcorn, MS71 and heterozygous genotypes, respectively. Red flag, Lna1. Two-tailed Student’s t test; the data are shown as the mean ± SD. d Association mapping with a mixed linear model revealed that a 5-bp insertion in Popcorn was strongly associated with the number of leaves above the ear. The horizontal red dashed line represents the significance threshold at the P = 0.05 level with Bonferroni correction for 475 tests. The position of marker M9 was set as position “0”. Source data are provided as a Source Data file.