Table 1.

Influence of varied Fe and P nutritional regimes on growth and the nutritional status in two maize inbred lines.

Treatments		Dry weight (g plant-1)				Chlorophyll concentration (μg mg-1)		Fe concentration (μg g-1)				P concentration (μg g-1)
		Shoot		Root				Shoot		Root		Shoot		Root
		B73	Mo17	B73	Mo17	B73	Mo17	B73	Mo17	B73	Mo17	B73	Mo17	B73	Mo17
P1	F1	1.15cde	0.81d	0.39abc	0.40n.s	0.56bcd	0.43ef	51efg	31ef	101g	125ef	1917g	2345e	2413cde	1845d
	F2	1.02cde	1.09bcd	0.33bc	0.42	0.61bcd	0.57bcde	82ab	40cde	219cd	146def	1815g	1808e	2055de	1628d
	F3	1.02cde	1.38abcd	0.36abc	0.49	0.83ab	0.59bcde	73abc	37cde	179de	165cde	1743gh	1413e	1478e	1360d
	F4	1.36bcd	1.50abcd	0.51ab	0.49	0.96ab	0.69bc	73abc	48bc	239bc	166cdef	1327h	1767e	1190e	1520d
P2	F1	0.96de	1.10bcd	0.26cd	0.31	0.15d	0.33fg	40fg	33def	112fg	103f	5605b	5975c	4915a	5700c
	F2	1.25bcd	1.49abcd	0.27cd	0.42	0.73abc	0.55cde	61cde	44c	168e	156def	4290d	5203cd	3463abcd	4420c
	F3	1.55bc	1.53abcd	0.38abc	0.40	0.96ab	0.64bcd	70bcd	42c	206cde	169cde	4218de	4863cd	3293abcd	4210c
	F4	2.17a	1.83ab	0.53a	0.44	0.99ab	0.88a	81ab	54ab	203cde	193cd	3470f	4620d	2665bcde	4143c
P3	F1	0.62e	0.93cd	0.14d	0.25	0.25d	0.23g	33g	29f	158ef	204cd	6643a	10715a	4385abc	9250a
	F2	1.49bcd	1.63abc	0.36abc	0.42	0.31cd	0.49def	56def	38cde	159ef	218c	5083c	8138b	4330abc	7670ab
	F3	1.26bcd	1.40abcd	0.31cd	0.35	1.05a	0.58bcde	87a	41cd	283ab	283b	5420bc	7163b	4428ab	7548b
	F4	1.82ab	1.90a	0.39abc	0.40	1.12a	0.76ab	78abc	55a	290a	348a	3838ef	7568b	3923abc	8390ab
PxFe∗		+		+		+	+	+	+	+	+	+	+	+	+

Dry weights and concentrations of leaf chlorophyll and shoot and root Fe or P in B73 and Mo17 plants. Plants were grown for 17 days in nutrient solution supplemented with 10, 50, or 200 μM P (P1–P3) and with 10, 30, 70, or 200 μM Fe (F1–F4) at all 12 combinations. Values represent mean values and different letters indicate significant differences at p < 0.05 (n.s denotes no significance), n = 5. ^∗ describes the interaction between P and Fe, + denotes a statistically significant interaction.