TABLE 1.

Analysis of variance of non‐taproot and taproot nodules with Kenward–Roger's method

		Taproot nodules		Non‐taproot nodules
Source of variation	df	F value	P value	F value	P value
Genotype (G)	5	33.81	<2.2 × 10−16 ***	26.94	<2.2 × 10−16 ***
Environment (E)	2	2.25	.10	12.85	2.67 × 10−6 ***
Growth stage (T)	2	0.29	.74	19.75	2.72 × 10−9 ***
G × E	10	7.49	5.72 × 10−11 ***	4.59	3.45 × 10−6 ***
G × T	10	1.52	.13	1.62	.09
E × T	4	0.19	.95	2.38	.04*
G × E × T	20	1.21	.24	1.66	.03*

^*Significant at the .05 probability level.

^***Significant at the .001 probability level.