Table 2 Results of progeny testing of 41 cold-tolerant BC ₂ F ₂ individuals from four BC populations based on survival percentages (SPs) of their derived BC ₂ F _2:6 progeny evaluated under conditions of 4°C for 7 d in a growth chamber

ZH100

031 K85

A-IL1

1

30.0 ± n.a.**

81.0 ± n.a.

75.4 ± n.a.

031 K86

A-IL2

2

46.1 ± 25.6**

80.3 ± 11.0

75.0 ± 16.0

031 K89

A-IL3

5

√

23.7 ± 18.4*

88.5 ± 23.4

88.5 ± 35.3

031 K90

A-IL4

2

40.3 ± 0.2**

100.7 ± 20.7

102.4 ± 10.6

031 K92

A-IL5

5

√

41.4 ± 26.7**

91.7 ± 10.2

101.9 ± 33.8

031 K97

A-IL6

1

66.0 ± n.a.**

75.9 ± n.a.

59.4 ± n.a.

031 K96

-

1

9.7 ± n.a.

95.5 ± n.a.

82.4 ± n.a.

031 K101

-

1

10.0 ± n.a.

70.9 ± n.a.

82.5 ± n.a.

Bg300

031 K188

B-IL1

26

√

66.6 ± 30.2**

87.5 ± 12.4

114.1 ± 30.8

031 K187

B-IL2

10

23.8 ± 9.5*

83.8 ± 9.4

113.6 ± 31.6

031 K190

B-IL3

5

40.2 ± 4.0**

82.5 ± 9.7

134.2 ± 30.6

031 K195

B-IL4

11

√

20.7 ± 22.3*

76.3 ± 7.0

97.4 ± 19.0

031 K196

B-IL5

8

√

17.2 ± 22.2*

72.1 ± 6.1

97.7 ± 20.7

031 K189

B-IL6

2

41.5 ± 0.8**

71.7 ± 7.9

90.9 ± 3.8

031 K186

-

1

0.0 ± n.a.

78.0 ± n.a.

82.1 ± n.a.

031 K191

-

6

1.2 ± 1.8

86.1 ± 7.0

117.5 ± 35.4

031 K192

-

1

0.0 ± n.a.

82.2 ± n.a.

90.8 ± n.a.

031 K193

-

5

17.2 ± 13.4

88.6 ± 15.1

117.5 ± 17.7

031 K194

-

6

0.0 ± 0.0

81.6 ± 12.2

98.5 ± 14.0

Cis

031 K155

C-IL1

7

√

30.2 ± 22.2**

81.6 ± 16.9

88.3 ± 30.7

031 K156

C-IL2

14

√

22.2 ± 23.6*

73.5 ± 13.1

77.1 ± 17.5

031 K158

C-IL3

11

√

46.5 ± 35.5**

79.4 ± 8.6

74.1 ± 19.7

031 K159

C-IL4

1

95.4 ± n.a.**

90.2 ± n.a.

106.0 ± n.a.

031 K160

C-IL5

5

82.2 ± 20.7**

78.8 ± 7.7

86.5 ± 26.7

031 K161

C-IL6

2

85.1 ± 0.3**

89.9 ± 5.8

113.7 ± 27.3

031 K162

C-IL7

3

66.0 ± 4.3**

84.0 ± 4.3

79.0 ± 30.9

031 K163

C-IL8

1

74.6 ± n.a.**

76.3 ± n.a.

59.2 ± n.a.

031 K165

C-IL9

2

79.2 ± 23.9**

79.1 ± 20.8

80.4 ± 16.8

031 K168

C-IL10

1

68.6 ± n.a.**

67.3 ± n.a.

73.8 ± n.a.

031 K170

C-IL11

1

78.2 ± n.a.**

96.0 ± n.a.

90.1 ± n.a.

031 K171

C-IL12

4

69.5 ± 16.3**

76.5 ± 5.2

92.3 ± 17.0

031 K172

C-IL13

1

53.3 ± n.a.**

72.4 ± n.a.

92.4 ± n.a.

031 K166

-

1

14.3 ± n.a.

91.1 ± n.a.

55.9 ± n.a.

031 K157

-

1

15.8 ± n.a.

65.1 ± n.a.

82.0 ± n.a.

MNTH

031 K5

D-IL1

3

67.6 ± 28.2**

85.7 ± 22.6

166.9 ± 55.7

031 K12

D-IL2

2

52.8 ± 3.2**

65.5 ± 2.7

89.7 ± 6.9

031 K20

D-IL3

6

49.8 ± 12.9**

70.9 ± 7.5

84.8 ± 3.4

031 K21

D-IL4

2

46.6 ± 27.5**

63.9 ± 15.1

88.3 ± 37.9

031 K22

D-IL5

6

√

43.4 ± 16.0**

78.3 ± 6.4

90.6 ± 19.2

031 K8

-

1

7.8 ± n.a.

74.8 ± n.a.

90.4 ± n.a.

031 K15

-

3

11.9 ± 5.0

63.6 ± 21.2

41.0 ± 0.6

C418

13.1 ± 7.1

73.9 ± n.a.

77.6 ± n.a.