Table 1. Comparison of agronomic plant traits and flour quality component mean values of each group of origin to the overall mean (NS = no significant; *p < 0.05, **p < 0.01; ***p < 0.001).

Parameter	Overall	Spain	Greece	Italy	Tunisia	USA
n	120	29	28	19	10	34
Panicle emergence	111.4	113.9 NS	109.7**	109.7 NS	107.4**	112.8 NS
Plant height	1.38	1.42 NS	1.30**	1.41 NS	1.37 NS	1.42 NS
Starch	37.28	38.67 NS	40.58***	39.12 NS	38.69 NS	34.98*
Protein	16.07	16.21 NS	15.87 NS	15.98 NS	15.05*	17.56***
Monomeric	20.66	19.48 NS	22.45**	22.21*	20.17 NS	21.66*
Aggregate	10.65	10.21 NS	12.15**	11.27 NS	10.85 NS	10.73 NS
Prolamin	31.31	29.69*	34.60***	33.48*	31.03 NS	32.39 NS
Non prolamin	129.4	132.4 NS	124.1*	126.3 NS	119.5*	143.2***
Protein/Starch	0.43	0.42 NS	0.39 NS	0.40 NS	0.39*	0.51*
Monomeric/Aggregate	1.95	1.91 NS	1.86 NS	1.99 NS	1.88 NS	2.07 NS
Prolamin/Protein	0.20	0.18*	0.22*	0.21 NS	0.21 NS	0.18 NS