Table 1.

Levels of Expression of α-Amylase and GAMyb in the Wild Type and the slender Mutant Barley^a

	Expression of α-Amylase–GUS		Expression of GAMyb–GUS
Hormone Treatment	Wild Type	slender Mutant	Wild Type	slender Mutant
No hormone	0.2 ± 0.0	8.7 ± 1.2	14.4 ± 2.0	20.5 ± 2.1
+GA3	16.6 ± 2.7	10.3 ± 1.2	22.9 ± 1.3	22.2 ± 3.8

^aEither the α-amylase or the GAMyb reporter construct was bombarded into slender mutant embryoless half-seed along with the internal control construct UBI–luciferase, using the same amount of effector and reporter constructs (1.14 μg per shot). Transformed half-seeds were incubated for 12 hr with or without 1 μM GA₃. GUS activities (×10⁻³) ±se are presented.