Table 2.

Effect of environment on the harvested yield (t·ha⁻¹), grain quality and thousand grain weight (TGW) of four winter oat varieties grown in 22 environments. Data are presented as the mean of the 4 winter oat varieties in each environment.

Environment	Yield (t·ha−1)	Grain Number (1000 m−2)	Groat Content (%)	Hullability (%)	Hectoliter Weight (kg·hL−1)	TGW (g)
1	6.03	16.03	68.65	90.07	43.14	37.65
2	8.31	19.90	73.45	77.46	50.17	41.89
3	9.31	24.83	68.88	83.44	50.26	37.92
4	8.08	18.20	75.49	93.60	46.01	44.96
5	7.92	16.56	75.48	91.36	53.66	48.18
6	10.02	22.06	75.23	88.32	55.35	45.27
7	6.77	16.78	73.42	98.50	44.47	40.41
8	4.96	12.38	75.73	93.03	50.89	41.40
9	7.18	17.41	74.13	86.82	49.24	41.74
10	10.19	24.16	74.68	71.34	52.94	42.00
11	4.84	10.88	75.88	99.58	51.12	44.55
12	7.98	18.97	73.97	91.34	59.57	42.55
13	7.26	17.85	73.55	93.06	49.65	40.66
14	9.74	23.24	72.91	76.37	51.88	42.04
15	7.61	17.35	73.08	95.55	* na	44.60
16	8.79	22.02	73.22	84.52	52.13	40.23
17	9.69	22.45	72.99	80.28	53.17	43.25
18	6.83	17.86	69.72	97.52	* na	38.40
19	10.49	26.62	72.55	75.76	51.76	39.66
20	9.94	22.94	72.73	83.17	50.99	43.62
21	8.20	20.62	74.36	97.23	42.64	39.47
22	9.43	26.84	70.56	83.90	49.14	35.52
s.e.	0.381	0.950	0.448	1.544	0.787	0.765
Prob	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

* na, data not available.