Table 1.

Shannon-Weaver index (H′) estimated on the 304 Tunisian durum wheat accessions for five regions and for three climate stages

		Phenotypic traits
		SS	SL	AL	SC	NS	GlC	GN	GSp	GSz	GC	AC	SD	Mean H′
Collection		0.86	0.98	0.79	0.53	0.83	0.84	0.69	0.87	0.94	0.86	0.64	0.74	0.80
Regions	Sousse	0	0	0	0	0	0	0	0	0	0	0	0	0.00
	Mahdia	0.52	0.99	0.56	0.00	0.63	0.48	0.62	0.63	0.48	0.74	0.73	0.65	0.58
	Kairouan	0.85	0.98	0.57	0.48	0.96	0.97	0.62	0.98	0.88	0.75	0.12	0.70	0.74
	Gabes	0.44	0.49	0.50	0.25	0.63	0.50	0.57	0.56	0.43	0.73	0.61	0.65	0.53
	Medenine	0.60	0.71	0.86	0.53	0.59	0.53	0.78	0.86	0.63	0.62	0.71	0.47	0.66
	Mean	0.54	0.69	0.55	0.30	0.61	0.55	0.55	0.65	0.56	0.62	0.47	0.53	0.55
Climate stages	LSA	0.48	0.00	0.92	0.63	0.61	0.41	0.62	0.61	0.62	0.74	0.67	0.79	0.59
	MA	0.68	0.38	0.80	0.87	0.62	0.56	0.70	0.88	0.54	0.89	0.71	0.65	0.69
	HA	0.85	0.48	0.97	0.58	0.96	0.96	0.63	0.98	0.88	0.75	0.12	0.68	0.74
	Mean	0.67	0.29	0.90	0.69	0.73	0.64	0.65	0.82	0.68	0.79	0.50	0.71	0.67

SS spike shape, SL spike length, AL awn length, SC spike color, NS number of spikelets/spike, GlC glume color, GN number of grains/spikelet, GSp grain shape, GSz grain size, GC grain color, AC awn color, SD spike density, LSA Low Semi-Arid (Sousse and Mahdia), MA Mid-Arid (Gabes and Medenine), HA Higher-Arid (Kairouan)