Similarity Patterns and Stability of Environmental Response in Sunflower Hybrids
Table 4
Mean values of eleven sunflower hybrids for three anticipated sowing dates (S1, S2, and S3) in three location-year combinations for eight biometric traits.
Sowing date
Location-year
Germination (%)
Days to flowering
Plant height (cm)
Branching (plants%)
Head diameter (cm)
1000 seed weight (g)
Seed yield (t )
Oil content (% d. m.)
S1
Valenzano 2007
95a
183a
88.6a
58a
17.0a
59.6a
1.35a
42a
Valenzano 2008
95a
172b
92.3b
25b
10.6b
66.4b
0.90b
35b
Foggia 2007
79b
164c
116.0c
78c
18.7c
66.7b
1.72c
39c
Mean
90
173
100.3
53
15.4
64.2
1.32
38
S2
Valenzano 2007
93a
175a
111.5a
5a
16.5a
57.8a
1.72a
43a
Valenzano 2008
88a
167b
100.9b
5a
9.5b
53.8a
0.83b
41b
Foggia 2007
73b
153c
119.3c
76b
17.5a
60.2b
1.83a
38c
Mean
84
165
110.6
28
14.5
56.2
1.45
41
S3
Valenzano 2007
86a
147a
122.9a
2a
16.7a
51.7a
1.75a
44a
Valenzano 2008
95b
150b
103.7b
2a
9.7b
47.1b
0.88b
44a
Foggia 2007
65c
133c
114.7c
72b
17.9a
60.9c
1.72a
38b
Mean
83
144
113.4
25
14.7
53.2
1.45
42
Significant differences at are indicated by different letters (Duncan test). Means followed by the same letters do not differ significantly; Duncan test at
