Table 6. Available iron contents (nmol/gr de peso fresco) in leaves, stems and roots of L. japonicus Gifu B-129 and MG-20 plants.

		Root	Stem	Leaf
Gifu B-129	control	0,6±0,07b	0,53±0,08b	0,85±0,06a
	alkaline	1,18±0,07a	1,22±0,08a	0,51±0,06b
MG-20	control	0,51±0,07a	0,25±0,08a	0,59±0,06a
	alkaline	0,57±0,07a	0,41±0,08a	0,53±0,06a

Seven-day-old plants were watered with 0.5× Hoagland’s nutrient solution, with or without addition of 10 mM NaHCO₃ over 21 days. Average data (±SE; n = 12) with the same letter within each ecotype×organ are not significant different (Duncan, P<0.001).