Influence of Corn (Zea mays L.) Cultivar Development on Grain Nutrient Concentration

Table 3

Grain micronutrient concentrations for 10 corn cultivars representing five different technological levels in 2006 and 2007, at Rolandia County, Parana State, Brazil.

		Cu	Fe	Mn	Zn	Cu	Fe	Mn	Zn
Treatment		2006				2007
					g kg^−1
Single	AG9010	7.3^ab	21^ab	6^bc	36^ab	1.1^a	38^a	10^a	24^a
Hybrids	DKB950	5.7^ab	19^ab	5^c	30^bc	0.8^a	39^a	11^a	26^a
Triple	DKB566	4.7^b	18^ab	7^bc	32^abc	0.7^a	33^a	12^a	24^a
Hybrids	AG5020	4.8^ab	17^b	5^bc	31^bc	1.0^a	37^a	11^a	23^a
Double	AG2040	9.6^a	29^ab	11^a	39^a	1.1^a	37^a	13^a	27^a
Hybrids	DKB979	5.2^ab	20^ab	7^bc	31^bc	1.1^a	33^a	10^a	24^a
Commercial	BRS4157	5.6^ab	34ª	8^ab	32^abc	0.9^a	37^a	13^a	31^a
Varieties	BR106	2.8^b	18^ab	8^ab	27^c	0.7^a	38^a	11^a	24^a
Landraces	GI045	3.6^b	18^b	7^abc	28^c	1.3^a	40^a	11^a	22^a
Cultivars	Palotina	6.4^ab	17^b	6^bc	29^bc	0.9^a	41^a	12^a	22^a
Coefficient of variation		59	54	33	17	87	18	29	27

* Averages followed by the same letter in a column did not differ according to Duncan’s multiple range test (𝑃≤0.05).