Fig. 2.
Internode phenotypes of ZUOErN plants. (A) Stem morphologies. The arrowheads indicated the elongated stem internodes. Scale bar=10 cm. (B) Cross-sections of the first elongated stem internodes. The photos below are enlarged images taken from the images above. Scale bars=200 μm. (C) Internode diameters. (D) Longitudinal sections of stem internodes. Scale bars=20 μm. (E) Numbers of large vascular bundles (LVs) and small vascular bundles (SVs) of the main stem at the first internode. ZH-WT, wild type Zhonghua 11. ZUOErN3 and ZUOErN4 are transgenic Zhonghua 11 plants overexpressing the miR164b-resistant OsNAC2 driven by the maize Ubiquitin1 promoter. Means ±SD are given in (C) and (E) (n=10). *P<0.05; **P<0.01 (t-test).