Shoot apex (A) and internode (B) length of the wild type (WT) and tin at 15, 18, and 21 DAP. Data for A and B are mean ± se; n = 3. Only the internode length at 21 DAP, shown by the asterisk, is statistically significantly different (P value = 0.001) between the wild type and tin. C, Internode development of WT (left) and tin (right) at 28 DAP. Hollow internode of WT (D) and solid internode of tin (E). The first three basal internodes of tin are solid, and the sections of WT and tin are from the third internodes at 5 weeks after planting.