Real time-PCR quantification of mRNA levels of OsPIN1 , ORR1 and OsLEA1 in rice immature seeds during callus induction (CIM) and early shoot organogenesis (RM). (a, d) OsPIN1 levels. (b, e) ORR1 levels. (c) OsLEA1 level. Levels were normalized to that at day 14 of TN11 in CIM. Ubiquitin level was used as a reference. Data are mean ± standard error (n=3).