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Table 6 Significant markers that segregate with resistance to PWD as identified with Kruskal-Wallis test

From: Construction of genetic linkage map and identification of a novel major locus for resistance to pine wood nematode in Japanese black pine (Pinus thunbergii)

Surrounding markers

Mean of genotype classes associated with phase 00f

Allelic effectsg

Locusa

Type of DNA marker

Allele configuration

LGb

maternal ‘Tanabe 54’ map position

Integrated map position

Kc

Signif. KWd

Dfe

ac

(ee)

ad

(ef)

bc

(eg)

bd

(fg)

Maternal

Paternal

Interaction

bcpt1004

genomic SSR

<abxcd>

03

22.17

21.12

15.04

******

1

101.6

114.6

82.3

81.7

52.20

−12.40

−13.60

BPES0413

EST-SSR

<efxeg>

03

38.75

39.81

16.71

*******

1

84.1

103.9

78.8

116.3

−57.30

−7.10

17.70

GG_BPCS14F07_283

EST-derived SNP

<lmxll>

03

45.82

49.82

17.82

*******

1

–

–

–

–

–

–

–

bcpt1029

genomic SSR

<abxcd>

03

46.36

51.98

16.62

*******

1

121.4

98.4

81.5

80.7

57.60

23.80

22.20

GG_contig16053_425

EST-derived SNP

<lmxll>

03

47.44

51.09

16.60

*******

1

–

–

–

–

–

–

–

bcpt1803

genomic SSR

<abxcd>

03

50.69

56.39

16.62

*******

1

83.8

78.8

121.4

98.4

−57.20

28.00

−18.00

  1. a Bold indicates the nearest marker of QTL identified by MQM
  2. b Linkage group
  3. c Kruskal–Wallis analysis (K*) test regarded as nonparametric equivalent of one-way analysis of variance (Van Ooijen 2004)
  4. d P-values are designated as ****** = p<0.001; ******* = p < 0.0001
  5. e Degree of freedom
  6. f Represents four genotypic segregating classes (ac, ad, bc, bd) of a cross of two heterozygous parents <ab x cd>, being ab as maternal and cd as paternal alleles
  7. g Additive effects calculated as [(ac + ad) - (bc + bd)] for male, [(ac + bc) - (ad + bd)], and [(ac + bd) - (ad + bc)] for interaction effects. The bigger the number, the more significant effects from the class