Table 1 Shoot regeneration numbers on MS medium with exogenous hormones NAA and 6-BA. Values are mean ± standard errors form 15 replicates. Three asterisks indicate statistically significant differences from the control (NAA contents 0 mg/l and 6-BA contents 0 mg/l) numbers (^***P < 0.001, Student’s t-test)

From: Expression of AtLEC2 and AtIPTs promotes embryogenic callus formation and shoot regeneration in tobacco