GA responses of the <i>brm-1</i> mutant.

<p>(A, B), Elongation of <i>brm-1</i> hypocotyls and roots in response to 1 µM GA₄. Plants were grown on ½ MS medium for 8 days under long-days conditions in the presence or absence of 1 µM GA₄. GA application caused considerable elongation of the hypocotyls, but had little effect on <i>brm-1</i> root growth. Bar = 5 mm. (B), Hypocotyl length of plants grown as in A. Presented data are the means of 12 measurements ± s.d. (C), Flowering of <i>brm-1</i> plants in response to exogenous gibberellins. Plants were grown in soil under short-day conditions and treated with 10 µM GA₃. At least 15 plants of each line/condition were scored. Data are the means ± s.d. Asterisks indicate significant differences from the wild type plants (p<0.01).