. 2019 Jul 19;8(7):234. doi: 10.3390/plants8070234

Table 5.

Effects of region on the relationships between total metabolite contents (amines or quercetins) and (a) the environment, or (b) the phenotype among populations. The table shows the interaction term between region and either a given environmental variable or a given trait *.

	Interaction Term between Regions and
Amines	(a) Overall Environment			Soil Water Saturation			pH			Conductivity
Amines	p-Value	F	R²	p-Value	F	R²	p-Value	F	R²	p-Value	F	R²
R. biternatus	0.059	3.723	0.213	0.157	2.07	0.116	0.291	1.138	0.007	0.608	0.267	0.52
R. pseudotrullifolius	0.349	0.892	0.306	0.023	5.467	0.336	0.952	0.004	0.309	0.116	2.55	0.32
R. moseleyi	0.111	2.647	0.527	<0.001	23.706	0.317	0.068	3.522	0.375	0.051	4.048	0.55
Quercetins	Overall Environment			Soil Water Saturation			pH			Conductivity
Quercetins	p-Value	F	R²	p-Value	F	R²	p-Value	F	R²	p-Value	F	R²
R. biternatus	0.949	0.004	0.21	0.191	1.755	0.196	0.104	2.747	0.356	0.073	3.351	0.18
R. pseudotrullifolius	0.005	8.719	0.104	0.005	8.719	0.011	<0.001	14.71	0.204	0.312	1.044	0.17
R. moseleyi	0.593	0.291	0.006	0.502	0.459	0.314	0.574	0.321	0.062	0.001	11.71	0.31
	Interaction Term between Regions and
Amines	(b) Phenotype			Plant height			Number of Leaves
Amines	p-Value	F	R²	p-Value	F	R²	p-Value	F	R²
R. biternatus	0.91	0	0.042	0.89	0.774	0.025	0.094	4.709	0.066
R. pseudotrullifolius	0.99	0.029	0.26	0.31	0.203	0.27	0.001	10.82	0.39
R. moseleyi	0.046	9.388	0.35	0.042	5.76	0.32	0.41	0.048	0.26
Quercetins	Phenotype			Plant height			Number of Leaves
Quercetins	p-value	F	R²	p-value	F	R²	p-value	F	R²
R. biternatus	0.63	0.005	0.008	0.76	0.757	0.022	0.61	0.152	0.17
R. pseudotrullifolius	0.77	0.084	0.025	0.87	0.026	0.1	0.022	7.952	0.13
R. moseleyi	0.17	3.349	0.18	0.08	0.078	0.11	0.57	2.624	0.1

* Interaction terms are taken from multiple regression analyses that contain also the respective raw variables. “Overall environment” and “Phenotype” represent scores along the first axis of an environmental or morphological PCA, respectively (Methods) calculated across the “soil water saturation”, “pH” and “conductivity”. F and sequential-Bonferroni corrected p-value (bold if < 0.05) of the interaction term; and adjusted r squared of the multiple regression. Sample sizes for amines/quercetines: R. biternatus = 58/52; R. pseudotrullifolius = 57/48; R. moseleyi = 46/26.