Table 3.

Measurement of the Vascular Elements in Wild-Type and SLL1-Overexpressing Plants

	Phloem (μm2)	Phloem/Xylem	Phloem/Vascular Bundle
Wild Type	495 ± 148	1.25 ± 0.24	0.18 ± 0.02
pSLL1:SLL1	1700 ± 477**	2.18 ± 0.39**	0.39 ± 0.03**

The areas of phloem, xylem, and whole vascular bundles in large veins were measured, as well as the ratios of phloem/xylem and phloem/vascular bundle. The large veins for measurement were selected from 10 rolled leaves of three independent transgenic lines. The data are statistically analyzed and presented as means ± sd (n > 30). Heteroscedastic t test indicated the significant differences (** P < 0.01) compared with the wild type.