Table V.

GA content of N. sylvestris (Ns) and transgenic plants overexpressing SoGA2ox3 grown under various photoperiodic conditions

Plants were grown in SD for 80 d and then transferred to LD for the number of days indicated prior to harvest. GA content was determined by GC-MS-selected ion monitoring, using deuterated GAs as internal standards. nd, Not detectable.

Sample	Photoperiodic Treatment	GA53	GA19	GA20	GA1	GA97	GA110
Ns	SD	0.7a	3.8	1.2	0.9	11.7	nd
Ns/35S∷SoGA2ox3	SD	0.1	2.1	0.3	0.8	11.6	0.5
Ns	14 LD	13.2	32.4	16.7	4.9	16.9	nd
Ns/35S∷SoGA2ox3	14 LD	4.4	4.7	0.8	0.9	40.3	7.2
Ns	20 LD	32.3	54.3	27.0	5.2	14.1	1.5
Ns/35S∷SoGA2ox3	20 LD	6.3	7.5	1.8	1.0	85.3	9.1
Ns/35S∷SoGA2ox3	30 LD	9.7	9.4	2.3	1.1	94.9	10.2

^aValues are in ng g⁻¹ dry weight.