Table V.

O₂ consumption rates (nmol O₂ g⁻¹ fresh wt min⁻¹) in root tips from Fe-sufficient and Fe-deficient sugar beet

Oxygen Consumption	+Fe	−Fe (YZ)
Initial rate	164 ± 23	627 ± 69
2 mm KCN	83.4 ± 6 (49%)	326 ± 23 (48%)
2 mm SHAM	113 ± 26 (31%)	499 ± 23 (20%)
2 mm KCN + 2 mm SHAM	0 (100%)	108 ± 31 (82%)
2 mm KCN + 2 mm SHAM + 2 mm Fe(III)-EDTA	–	0 (100%)
2 mm KCN + 2 mm Fe(III)-EDTA	–	263 ± 11 (58%)
2 mm SHAM + 2 mm Fe(III)-EDTA	–	422 ± 20 (33%)
2 mm Fe(III)-EDTA	164 ± 23 (0%)	514 ± 7 (18%)

Data are the mean ± sd of 10 replications. Data in brackets are the percentage of inhibition of O₂ consumption respect to the initial rate.