Table 2 Summary statistics of phenotypic traits for the Italian hybrid zone

From: Admixture mapping of quantitative traits in Populus hybrid zones: power and limitations

Trait

P. tremula mean (s.d.)

Admixed mean (s.d.)

P. alba mean (s.d.)

P-value Wilcoxon testa

P-value trait∼Q for admixedb

PETL

42.32 (10.28)

35.50 (10.78)

32.01 (9.89)

0.000

0.018

LFAREA

1940 (633)

1754 (743)

1476 (548)

0.000

0.062

PTRAT

0.796 (0.127)

0.665 (0.128)

0.659 (0.159)

0.000

0.002

PETXM

1.498 (0.225)

1.376 (0.175)

1.290 (0.103)

0.000

0.080

PETXB

1.407 (0.206)

1.419 (0.184)

1.303 (0.159)

0.006

0.075

PETXA

1.326 (0.175)

1.289 (0.118)

1.339 (0.156)

0.493

0.018

LFSHAP

1.098 (0.152)

1.205 (0.166)

1.194 (0.167)

0.003

0.022

LDRAT

0.189 (0.062)

0.175 (0.060)

0.197 (0.044)

0.160

0.999

  1. Abbreviations: LDRAT, lobe depth; LFAREA, leaf area; LFSHAP, leaf shape; PETL, petiole length; PETXA, petiole flatness at petiole apex; PETXB, petiole flatness at petiole base; PETXM, petiole flatness at petiole middle; PTRAT, petiole ratio; s.d., standard deviation.
  2. P-values <0.05 are marked in bold.
  3. aP-values for Mann–Whitney–Wilcoxon test for the null hypothesis that trait values for parental populations are from the same distribution.
  4. bP-values for the null hypothesis that linear regression slopes for phenotypic traits of admixed individuals as a function of structure Q are zero.
Back to article page