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Cold Hardiness Traits Analyzed

Table 1 Description of cold hardiness traits, year of measurement, and names of traits.

Trait Description

Year

Trait Name

Fall cold injury (buds)

1996

fch_b

Fall cold injury (needles)

1996

fch_n

Fall cold injury (stems)

1996

fch_s

Spring cold injury (buds)

1997

sch_b

Spring cold injury (needles)

1997

sch_n

Spring cold injury (stems)

1997

sch_s

QTL Models Used in Analyses
1 versus 0 QTL

Table 2 QTLs detected controlling fall and spring cold-hardiness following the 1 vs. 0 QTL model. Shown are linkage group (LG) and map position, F-values for the model, maternal, paternal and maternal x paternal interaction effects, and proportion of the total phenotypic variance explained by each QTL. Standard errors for effects are shown in parentheses.

See Table 1 for description of trait names.

Trait LG Map position (cM) F-value Pat. Effect (Std. Error) Mat. Effect (Std. Error) Pat. X Mat. Effect (Std. Error) Proportion var. (%)

fch_b

4

89

9.25**

- a

-0.436 (0.143)

-

4.3

fch_s

2

80

3.75*

-0.163 (0.104)

-0.291 (0.105)

0.121 (0.107)

4.3

fch_s

6

13

4.79*

-

0.792 (0.362)

-

2.0

fch_s

8

5

3.78*

0.554 (0.211)

0.335 (0.212)

-0.440 (0.433)

4.4

sch_b

1

98

3.66*

-0.057 (0.545)

0.290 (0.088)

-0.156 (0.591)

4.5

sch_n

6

18

7.72**

-

-0.992 (0.357)

-

3.8

sch_n

10

15

5.60**

0.025 (0.114)

0.367 (0.114)

-0.260 (0.115)

7.5

sch_s

1

98

3.65*

0.836 (0.403)

0.158 (0.065)

-0.313 (0.437)

4.5

sch_s

7

26

4.47**

0.027 (0.078)

0.010 (0.067)

-0.322 (0.089)

5.8

* p < 0.01

** p < 0.005

a Markers on this linkage group provide information for only one parent. Regression model is not "full rank".
2 versus 0 QTLs

Table 3 QTLs detected controlling fall and spring cold hardiness following the 2 vs. 0 QTL model. Shown are linkage group (LG) and map position, F-values for the model, paternal, maternal and paternal x maternal interaction effect s, and proportion of total phenotypic variance explained by each QTL. Standard errors for effects are shown in parentheses.

See Table 1 for description of trait names  

Trait

LG

Map position (cM)

F-value

Pat. Effect (Std. Error)

Mat. Effect (Std. Error)

Pat. X Mat. Effect (Std. Error)

Proportion var. (%)

fch_b

4

14

44

5.23**

- a

-

0.002 (0.062)

-12.0 (3.71)

-

-

4.4

fch_n

2

85

100

3.69**

-0.416 (0.178)

0.357 (0.170)

-0.150 (0.076)

-0.111 (0.056)

0.531 (0.193)

-0.596 (0.249)

6.8

fch_s

6

48

63

4.79**

-

-

0.139 (0.064)

0.188 (0.086)

-

-

2.0

fch_s

8

5

30

3.78**

0.149 (0.057)

0.245 (0.096)

0.090 (0.057)

0.148 (0.094)

-0.052 (0.052)

-0.143 (0.140)

4.4

sch_b

6

33

43

3.47**

-

-

-0.145 (0.078)

-0.178 (0.095)

-

-

1.4

sch_b

7

26

56

3.07*

0.031 (0.057)

0.029 (0.053)

0.080 (0.119)

0.082 (0.117)

-0.540 (0.057)

0.496 (0.169)

5.8

sch_n

6

43

68

7.72**

-

-

-0.162 (0.058)

-0.267 (0.096)

-

-

3.8

sch_n

7

51

56

4.68**

0.117 (0.078)

0.105 (0.070)

-10.34 (6.04)

11.57 (6.58)

-17.11 (7.76)

20.44 (9.34)

9.8

sch_n

10

10

30

5.60**

0.017 (0.075)

0.013 (0.060)

0.242 (0.075)

0.192 (0.060)

-0.214 (0.095)

-0.136 (0.060)

7.5

sch_s

1

83

88

3.19**

0.318 (0.162)

0.288 (0.147)

0.319 (0.191)

-0.190 (0.190)

1.84 (0.944)

-2.16 (1.04)

6.2

sch_s

7

31

46

4.21**

0.014 (0.034)

0.014 (0.035)

-0.181 (0.137)

0.245 (0.128)

-0.559 (0.165)

0.316 (0.153)

8.7

* p < 0.01

** p < 0.005

a Markers on this linkage group provide information for only one parent. Regression is not "full rank". 
map figure featuring summary of cold hardiness QTL estimates
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