Table 2.

Parameter estimates from over-wintering regression models for S. bicolor × S. propinquum F4 hybrids

LogRDS only model	R² = 0.25
Term	Estimate	SE	t-ratio	Prob > |t|
Intercept	0.11	0.04	2.64	0.0094*
LogRDS	0.25	0.04	6.39	<0.0001*

LogAvgDist only model	R² = 0.14
Term	Estimate	SE	t-ratio	Prob > |t|
Intercept	−0.1	0.09	−1.03	0.3032
LogAvgDist	0.28	0.06	4.42	<0.0001*

Whole model	R² = 0.3
Term	Estimate	SE	t-ratio	Prob > |t|
Intercept	−0.13	0.08	−1.58	0.1168
LogRDS	0.25	0.05	5.23	<0.0001*
LogAvgDist	0.18	0.06	2.9	0.0045*

Logistic regression model	R² = 0.33
Term	Estimate	SE	χ2	Prob > |t|
Intercept	3.94	0.81	23.66	<0.0001*
LogRDS	−2.06	0.55	14.13	0.0002*
LogAvgDist	−0.81	0.53	2.37	0.1239
(LogRDS-0.70) × (LogAvgDist–1.31)	−2.06	0.87	5.6	0.0180*

SE standard error

* Significant at alpha <0.05