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Collection of PtoDET2 transgenic poplars. a PtoDET2 expression in different developmental stages throughout the most periods of life cycle in poplar. b PtoDET2 expression profiling by Q-PCR analysis. c Endogenous BRs levels in transgenic and wild-type stems. d The expression of BRs biosynthesis relative genes. Data represent mean ± SD of three biological replicates. Statistical analyses were performed using Student’s t test as **P < 0.01
