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Table 6 Chi-squared test to calculate the associations between the parental haplotype combinations (T1-C1, T1-C2, T2-C1 and T2-C2) and the number of resistant/susceptible trees

From: Identification of candidate genes involved in Witches’ broom disease resistance in a segregating mapping population of Theobroma cacao L. in Brazil

QTL 1

QTL 2

QTL 3

Total

Observed

Expected

P-value

% resistant

Resistant

Suscept.

Resistant

Suscept.

QTL9.1_T2-C1

NA

NA

110

92

18

55

55

1.72E-12

83.6

QTL6.1_T2-C2

NA

NA

128

101

27

64

64

6.12E-11

78.9

QTL9.1_T2-C2

NA

NA

116

93

23

58

58

8.07E-11

80.2

QTL7.1_T1-C2

NA

NA

111

88

23

55.5

55.5

6.85E-10

79.3

QTL9.2_T2-C1

NA

NA

117

90

27

58.5

58.5

5.73E-09

76.9

QTL9.1_T2-C1

QTL9.2_T2-C1

NA

68

59

9

34

34

1.33E-09

86.8

QTL9.1_T2-C2

QTL6.1_T2-C2

NA

37

35

2

18.5

18.5

5.79E-08

94.6

QTL9.1_T2-C2

QTL6.2_T2-C2

NA

41

37

4

20.5

20.5

2.55E-07

90.2

QTL9.1_T2-C1

QTL7.1_T1-C1

NA

34

32

2

17

17

2.68E-07

94.1

QTL9.1_T2-C2

QTL9.2_T2-C2

NA

71

57

14

35.5

35.5

3.34E-07

80.3

QTL9.1_T2-C2

QTL6.1_T2-C2

QTL6.2_T2-C2

20

19

1

10

10

0.000057

95.0

QTL9.1_T2-C2

QTL9.2_T2-C2

QTL6.1_T2-C2

23

21

2

11.5

11.5

0.000074

91.3

QTL9.1_T2-C1

QTL9.2_T2-C1

QTL3.1_T2-C1

18

17

1

9

9

0.000162

94.4

QTL9.1_T2-C2

QTL9.2_T2-C2

QTL7.1_T1-C2

18

17

1

9

9

0.000162

94.4

QTL9.1_T2-C2

QTL9.2_T2-C2

QTL6.2_T2-C2

24

21

3

12

12

0.000239

87.5

  1. The threshold for susceptible trees was set for trees with more than ten total vegetative brooms over the whole period of 4 years. For the combinations of two or three different QTLs, the first QTL was always QTL9.1 since it showed the highest association as a single QTL
  2. ‘NA’, not applicable