Figure 5.

Decreased number of brace roots in RAP2.7-Mu mutant as revealed by F₂ segregating population. (A) Phenotype of brace roots development in RAP2.7-Mu mutant and wild-type W22 plants grown in the field at mature stage (75 days after sowing). The difference in brace roots between two genotypes was signed with a red arrow. (B) Number of brace and crown roots of maize plants grown in Shangzhuang (2016) at mature stage (75 days after sowing). The RAP2.7-Mu mutant and wild-type W22 plants were genotypically selected from a F₂ segregating population. The whorl corresponding to node numbers in orders was indicated as W1–W11. Bars indicate mean (±SD) (n = 23–28). Significant difference within each group was indicated with an asterisk (^**p < 0.01; ^***p < 0.001) according to Student’s t-tests.