Table I.

Histological analysis of stem and root

WTAt5/2At10/1
Fascicular xylem (a)153.4 ± 4.1188.7 ± 4.51-a 190.8 ± 61-b
Interfascicular arc (middle part) (b)93.9 ± 4.7149.6 ± 7.41-a 166.5 ± 4.41-b
Interfascicular arc (flanking the bundle) (c)118.2 ± 5.4162.4 ± 4.71-a 170.8 ± 4.41-b
Root vascular region (d)184.2 ± 5.9183.7 ± 7.8250.4 ± 6.91-b
Root periderm (e)56.2 ± 4.960.5 ± 10.353.3 ± 6.1
Root (f)240.4 ± 9.5244.2 ± 17.7303.7 ± 12.61-b

Mean value ± se (μm) of basal region of stem and region of root (see Figs. 3 and 4 for details) of plants at full development (6 weeks). Ten stems and eight roots were analyzed for each genotype.

    • F1-a   P < 0.05; comparison of wild type vs. At5/2.

    • F1-b P < 0.05; comparison of wild type vs. At10/1.