Table 1.

Growth Measurements of Wild-Type and sku5 Organs under Various Conditions

	Roots on Tilted 1.5% Agar	Roots on Vertical 0.8% Agar	Roots in 0.8% Agar	Roots in Liquid GM	Etiolated Hypocotyls in Air
WTa lengthb	23.9 ± 2.5	25.1 ± 2.8	24.0 ± 3.2	NDc	14.8 ± 1.1
sku5 lengthb	21.5 ± 2.4	21.0 ± 2.5	20.7 ± 2.8	ND	13.3 ± 1.0
P value	6.3 × 10−7	1.9 × 10−14	2.7 × 10−48	NAd	5.3 × 10−29
WT anglee	14.2° ± 4.8	2.8° ± 8.0	0.14° ± 4.9	NA	NA
sku5 anglee	59.4° ± 7.0	31.7° ± 11.3	0.55° ± 5.6	NA	NA
P value	5.9 × 10−97	1.5 × 10−38	0.47	NA	NA
WT CFRf	ND	2.8 ± 4.1	2.9 ± 3.1	2.6 ± 2.6	NA
sku5 CFRf	ND	17.1 ± 4.9	16.7 ± 5.2	13.2 ± 5.2	NA
P value	NA	3.3 × 10−30	1.2 × 10−31	2.5 × 10−24	NA

Measurements are averages ± sd; n = sample size; P value = Student's t test probability, where <0.05 is statistically significant. The P values correspond to a comparison between wild-type and sku5 samples of a given treatment. 47<n<93 for all samples except “Roots in 0.8% Agar” wild type and sku5 length (418<n<422) and “Etiolated Hypocotyls in Air” wild type and sku5 length (145<n<164).

^aWT, Wild type.

^bAverage organ length in millimeters.

^cND, Not determined.

^dNA, Not applicable.

^eAverage angle that roots grew, where 0° is vertical and positive numbers were to the left of vertical, as viewed from above the agar surface.

^fThe number of epidermal cell files that crossed a 1-mm-long line drawn down the longitudinal axis of the root, from ∼1.5–2.5 mm from the tip. CFR, Cell file rotation.