Table 1.

Cytokinin contents (pmol g^–1 FW) in the roots and shoots of the wild type (WT) and osabcg18 mutants^a

CKs	WT shoot	osabcg18-14 shoot	osabcg18-32 shoot	WT root	osabcg18-14 root	osabcg18-32 root
tZ	2.12±0.32	1.22±0.05**	1.27±0.26**	0.57±0.35	2.02±0.47**	1.23±0.12*
tZR	0.29±0.14	0.16±0.01*	0.20±0.04*	0.38±0.17	1.20±0.37**	1.43±0.31**
DHZ	0.10±0.01	0.04±0.01**	0.05±0.01**	0.07±0.02	0.28±0.03**	0.15±0.01**
iP	0.24±0.14	0.55±0.11*	0.41±0.05*	0.21±0.09	0.11±0.02	0.16±0.01
iPR	0.32±0.18	0.22±0.03	0.20±0.03	0.28±0.18	0.66±0.04**	0.55±0.06**
cZ	1.08±0.37	0.82±0.23	0.95±0.24	0.78±0.08	1.58±0.20**	1.27±0.14**
cZR	0.66±0.14	0.63±0.10	0.61±0.03	0.69±0.11	0.85±0.07	0.77±0.07

^a The roots and shoots of plants grown in the field for 50 d were collected for cytokinin quantification.

Data are means ±SD (n=4), * and ** indicate significant differences at P<0.05 and P<0.01, respectively, from Student’s t-test.

CK, cytokinin; tZ, trans-zeatin; tZR, trans-zeatin riboside; DHZ, dihydrozeatin; iP, isopentenyladenine; iPR, isopentenyladenosine; cZ, cis-zeatin; cZR, cis-zeatin riboside.