Table 3 Correlational selection gradients (μ ± SE) among open-pollinated and hand-pollinated plants and pollinator-mediated selection gradients, with proportion of damaged flowers and fruits as covariate, in one P. alpicola population at Lulang, China in 2016.

From: Pollinator-mediated selection on flowering phenology and floral display in a distylous herb Primula alpicola

 

Open-pollinated γ ij  ± SE

Hand-pollinated γ jj  ± SE

Pollinator-mediated

(R 2 = 0.573)

(R 2 = 0.784)

Δμ poll

P

Flowering start × No. of flowers

0.133±0.040

−0.024 ± 0.038

0.157

0.191

Flowering start × Flower size

−0.003 ± 0.038

0.016 ± 0.029

−0.019

0.453

Flowering start × Scape height

−0.088±0.041

−0.008 ± 0.038

−0.080

0.190

Flowering start × Rosette diameter

0.073±0.036

0.097±0.044

−0.024

0.283

No. of flowers × Flower size

0.052 ± 0.039

0.015 ± 0.033

0.037

0.547

No. of flowers × Scape height

−0.088±0.040

0.089±0.035

−0.177

0.005

No. of flowers × Rosette diameter

0.041 ± 0.045

−0.042 ± 0.043

0.083

0.392

flower size × Scape height

0.003 ± 0.045

−0.073±0.035

0.076

0.351

flower size × Rosette diameter

0.101±0.043

0.114±0.039

−0.013

0.910

Scape height × Rosette diameter

−0.051 ± 0.039

0.047 ± 0.032

−0.098

0.104

  1. Pollinator-mediated selection Δμ poll  = γ OP γ HP and P-values associated with differences in selection gradients between pollination treatments (the trait × pollination treatment interaction) in ANCOVA. Significant selection gradient estimates and their P-values are indicated in bold (P < 0.05).