Table 2.

Regression and partial regression coefficients (values from simple and multiple regression, respectively) for the linear and quadratic relationships between variation in genome size and variation in environmental factors across the Claytonia perfoliata complex

	Regression coefficient		Partial regression coefficent
	Linear	Quadratic	Linear	Quadratic
Winter temperature	–0·26**	–0·12	–0·23*	–0·088
Growing season precipitation	0·19	–0·127	0·129	–0·11

Genome size and environmental variables were standardized within cytotypes prior to regression analysis.

* P < 0·05; ** P < 0·01.