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Table 4 Analysis of compound QTL (qTA5a and qTA5b) diplotypes in seven full-sib peach families for their average titratable acidity (TA) content from the two environments CA11 and CA12. Haplotypes that seemed to be associated with a Q-allele for increased TA are in bold. Underlined TA-values are deviating from the proposed genetic model in which qTA5a shows recessive inheritance and where expression of qTA5b requires qTA5a to be-QQ

From: Identification and characterization of QTLs for fruit quality traits in peach through a multi-family approach

   

qTA5a

 

FS-Family

 

Diplotype

TA

Individual count

 

H3H4

H3H5

H2H4

H2H5

Total

H3H4

H3H5

H2H4

H2H5

Total

TX2B136

×

Y434–40

qTA5b

H1H3

0.42

–

0.75

0.98

0.71

6

–

4

2

12

H1H6

0.58

0.60

1.35

1.45

0.99

2

4

1

5

12

Total

0.50

0.60

1.05

1.21

0.85

8

4

5

7

24

 

Conclusions: 1) qTA5a: Effect H2 > H3, H4 ≡ H5

2) qTA5b: Effect H6 > H3, Effective only in the presence of qTA5a-H2

 
   

H1H4

H1H5

H2H4

H2H5

Total

H1H4

H1H5

H2H4

H2H5

Total

TX2B136

×

Y435–246

qTA5b

H1H3

0.45

0.40

0.70

–

0.52

2

1

2

–

5

H2H3

0.30

0.50

–

1.05

0.62

1

1

–

1

3

H2H6

0.53

0.20

0.95

–

0.56

3

1

1

–

5

Total

0.43

0.37

0.83

1.05

0.56

6

3

3

1

13

 

Conclusions: 1) qTA5a: Effect H2 > H1, H4 ≡ H5

2) qTA5b: None, too few pairwise comparisons

 
   

H1H2

H1H4

H2H2

H2H4

Total

H1H2

H1H4

H2H2

H2H4

Total

Victor

×

Y426–371

qTA5b

H1H3

0.38

0.35

0.90

0.77

0.60

3

3

1

3

10

H1H5

0.43

0.30

1.08

0.97

0.69

7

2

2

8

19

Total

0.41

0.33

0.99

0.87

0.65

10

5

3

11

29

 

Conclusions: 1) qTA5a: Effect H2 > H1, H2 ≡ H4, H2 at single dose has no effect

2) qTA5b: H5 possibly slightly > H3 in some genetic backgrounds

 
   

H1H2

H1H4

H2H2

H2H4

Total

H1H2

H1H4

H2H2

H2H4

Total

Victor

×

Y435–246

qTA5b

H1H3

–

0.35

0.80

–

0.58

–

1

1

–

2

H1H5

0.35

0.55

–

–

0.45

1

1

–

–

2

H2H3

–

–

–

0.85

 

–

–

–

2

2

H2H5

0.40

0.30

0.85

–

0.52

1

1

4

–

6

Total

0.38

0.40

0.83

0.85

0.51

2

3

5

2

12

 

Conclusions: 1) qTA5a: Effect H2 > H1, H2 at single dose has no effect

2) qTA5b: None, too few pairwise comparisons

 
   

qTA5a

 

FS-Family

 

Diplotype

TA

Individual count

  

H1H4

H1H5

H2H4

H2H5

Total

H1H4

H1H5

H2H4

H2H5

Total

TX2B136

×

Galaxy

qTA5b

H1H3

0.30

0.35

0.98

–

0.54

1

1

2

–

4

H1H6

0.50

1.05

–

1.63

1.06

1

1

–

3

5

H4H6

0.33

–

1.00

 

0.67

3

–

2

 

5

Total

0.38

0.70

0.99

1.63

0.76

5

2

4

3

14

 

Conclusions: 1) qTA5a: Effect H2 > H1,

2) qTA5b: None, too few pairwise comparisons H6 > H3

 
   

H3H4

 

H2H4

 

Total

H3H4

 

H2H4

 

Total

TXW1490_1

×

Y434–40

qTA5b

H1H3

0.39

 

1.03

 

0.71

4

 

11

 

15

Total

0.39

 

1.03

 

0.71

4

 

11

 

15

Conclusion: qTA5a: Effect H2 > H3

 
   

H1H4

 

H2H4

 

Total

H1H4

 

H2H4

 

Total

TXW1490_1

×

Y435–246

qTA5b

H1H3

0.33

 

0.75

 

0.54

2

 

3

 

5

H1H6

0.70

 

0.88

 

0.79

1

 

2

 

3

Total

0.52

 

0.82

 

0.67

1

 

2

 

8

 

Conclusion: None, too few data

 
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BMC Genomics

ISSN: 1471-2164

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