Table 3 Results from non-destructive measurements in spring of 2x T. occidentale, 6x T. ambiguum and three 6x T. ambiguum x 2x T. occidentale hybrids (5, 33 and 140). *denotes significant differences (P < 0.05)

118

2.2

73

166

94

1.16

0.21

6

12

2.4

1.0

0.0

14

3.3

144

43

255

1.87

0.18

0

12

4.0

3.1

6.5

35

3.2

47

56

204

2.16

0.16

29

18

4.1

2.4

4.0

27

3.2

46

59

181

1.81

0.17

26

15

3.8

2.7

0.8

24

3.3

33

46

194

1.89

0.18

23

17

4.0

2.3

1.5

14.7*

0.41*

27.6*

26.0*

22.8*

0.30*

0.023*

8.8*

6.6

0.83*

0.26*

2.50*

5.1

0.14

9.7

9.1

8.0

0.11

0.008

3.1

2.3

0.29

0.09

0.88