Figure 9.

Age-dependent senescence symptoms and other developmental traits of wild-type (Ws) and drr1 plants grown in soil. A, Age-dependent stem size. B, Rosette diameter. C, Number of visible rosette leaves. D, Chlorophyll content in rosette leaves at 28 d after transfer to soil. E, Stem number. F, Number of stem branches. Plants were grown with a 16-h-light/8-h-dark cycle at 22°C in a growth chamber, and developmental traits were monitored during their entire life cycle. Values shown are means ± sd (n = 18). Different letters represent means statistically different at the 0.05 level. The experiment was repeated twice with similar results. nd, Not determined.