Table 7 Heterosis above the mid-parent for the studied traits under both Orobanche-free and infested soil conditions

Line1×Nubaria1

3.05**

21.7**

21.43

-2.75

48.43*

7.09**

30**

-4.88**

21.98**

8**

84.03**

Line1×Sakha3

6.33**

46.63**

19.54

46.9

39.7**

75.01

37.7**

68.01**

23.35**

65.23**

-45.72

Line1×Nubaria5

5.9**

30.14**

58.73**

18.35

54.38**

70.64

39.17**

75.68

35.06**

88.96**

-22.54**

Line1×Marina

8.24**

40.08**

60.00*

30.08

89.52**

40.61

93.4**

28.09**

86.72**

23.16**

-20.59**

Line2×Nubaria1

3.23**

26.03**

33.56

35.57

94.11**

23.42**

34.86**

13.66**

23.51**

24.32**

85.49**

Line2×Sakha3

11.09**

63.15**

27.73

158.37**

45.34**

124.17**

47.66**

108.92**

28.02**

115.85**

-57.43

Line2×Nubaria5

6.84**

33.3**

49.12**

25.57

24.87**

88.61

24.09**

77.3

19.59**

68.34

-29.15**

Line2×Marina

9.87**

42.25**

38.63

54.6*

68.33**

79.19

89.27**

84.45

69.05**

81.55

-39.59**

Line3×Nubaria1

7.02**

42.92**

26.32

46.5**

39*

11.44**

27.66*

-16.16**

27.7**

51.86**

96**

Line3×Sakha3

10.87**

37.48**

33.11

79.93**

41.64**

24.84**

16.88

1.44**

28.65**

26.14*

62.39**

Line3×Nubaria5

13.71**

32.15**

56.69**

26.85

63.03**

81.06

17.62**

83.74

43.01**

96.94**

-8.81**

Line3×Marina

8.5**

0.18**

104.4**

13.51

72.57**

-34.99**

47.81

-32.66**

66.58**

-25.55**

35.63**

Line4×Nubaria1

5.22**

42.79**

27.4*

91.54**

53.86**

100.79

31.5**

113.73**

27.6**

157.76**

-19.32**

Line4×Sakha3

12.07**

48.18**

7.23

83.83**

53.08**

70.03*

31.28**

67.02**

25.96*

76.84**

-20.33**

Line4×Nubaria5

7.08**

28.58**

28.74**

-2.13

42.42**

55.57

14.57**

67.14

11.54

69.71*

-8.35**

Line4×Marina

1.69**

-4.22**

55.6

23.26

39.63*

-31.46**

75.75**

-26.22**

90.64**

-27.67**

-29.07**

Line5×Nubaria1

14.7**

32.26**

38.22*

21.62

34.93

-33.42**

42.18**

-41.27**

31.65**

-37.77**

28.13**

Line5×Sakha3

15.99**

46.7**

14

119.8**

11.19

60.87

43.27**

53.22

30.93**

47.48

2.25**

Line5×Nubaria5

6.99**

1.34**

39.82**

15.16

32.13**

-39.95**

27.46**

-55.93**

13.84*

-57.99**

86.14**

Line5×Marina

7.43**

-15.83**

119.49**

15.43

76.71**

-20.64**

111.83**

-32.08**

116.22**

-52.89**

-31.82**

Line6×Nubaria1

8.51**

59.71**

22.74

14.24

28.4

252.1**

18.53*

324.57**

11.59

310.59**

-37.54**

Line6×Sakha3

16.2**

22.94**

34.3

27.53

21.93

11.24

34.6**

-6.26

33.11**

-11.24

40.75**

Line6×Nubaria5

9.18**

45.54**

29.77**

-4.29

13.1

63.38

21.4**

53.58

29.93**

57.02

5.99**

Line6×Marina

11.43**

4.38**

68.12**

-28.57**

36.09

-11.11

83.02**

-24.02**

99.32**

-45.67**

-29.57**

Line7×Nubaria1

16.25**

20.71**

32.62

15.79

54.85**

-32.73**

64.56**

-29.97**

77.89**

-38.04**

92.19**

Line7×Sakha3

18.49**

47.49**

27.4

77.37**

38.25**

25.85

51.18**

29.74*

45.8**

32.93*

2.92**

Line7×Nubaria5

9.93**

32.96**

39.96**

36.58

14.86

170.03**

27.11*

223.54**

46.3**

263.7**

-34.31

Line7×Marina

8.72**

26.91**

53.88*

61.36*

98.52**

-32.05*

147.03**

-32.54**

127.18**

-51.85**

40.95**