Fig 7. Relative expression levels of MdRBOH genes during the adventitious rooting process.

Relative transcript levels of 10 MdRBOH genes were measured in stem tissue after the cuttings had been transferred to rooting medium for 0, 3, 6, or 9 days. Transcript levels were measured by qRT-PCR using apple EF1α as the reference gene. Data are means ± SD of three biological replicates. Refer to S1 Table for primers. The statistical analysis was conducted using Duncan’s multiple range test (P < 0.05). The different lowercase letters indicate significant differences.