Table I.

Efficiency and phenotypes of transgenic roots^a

Phenotype	pHG8-YFP	pHpPRN	t-Value
Transformation efficiencyb	28 ± 2.2	26 ± 2.8	0.61
	n = 1271	n = 1539
YFP-positive roots per plantc	1.8 ± 0.4	1.7 ± 0.4	0.88
	n = 352	n = 403
YFP-positive roots per plantd	2.0 ± 0.9	2.4 ± 0.7	0.05
	n = 49	n = 57
Root length (cm)d	3.5 ± 1.8	3.1 ± 1.0	0.74
	n = 49	n = 57
Lateral roots per YFP rootd	0.1 ± 0.3	0.1 ± 0.4	0.20
	n = 49	n = 57
Root growth no DMBQ (mm/24 h)d	2.6 ± 0.4	2.5 ± 0.6	0.85
	n = 40	n = 40
Root growth with DMBQ (mm/24 h)d	2.7 ± 0.5	2.6 ± 0.7	0.12
	n = 40	n = 40

^aValues are mean ± sd with n = total number of plants or roots in all replicates. Means are the averages of three independent transformation experiments per construction. Data were analyzed using SAS statistical software (pooled t test/equal/unequal variance).

^bPercentage of plants with at least one yellow root.

^cTwenty-one days after transformation.

^dThirty-three days after transformation.