Abundance of KD1 transcripts in pedicel (A) and petiole (B) AZs. A, Abundance of KD1 transcripts in AZ, distal, and proximal tissues of the pedicel. B, Abundance of KD1 transcripts in the petiole AZ, petiole, and main stem tissues. The abundance of KD1 transcripts was determined by qRT-PCR. Abundance of tomato 26S rRNA was used as an internal control. The abundance of KD1 transcripts was normalized against the abundance of 26S rRNA. Different letters indicate significant differences among tissues (Student’s t test, P < 0.05). The results are the means of three biological replicates ± sd.