Assessment of Tuber Yield Stability and Adaptability of Some Elite Yam Genotypes in the Guinea Savannah Ecology of Northern Ghana

Table 3

AMMI analysis of variance for 11 elite yam genotypes evaluated in five environments for tuber yield.

	Tuber yield
Source of variation	Df	Sum of squares	Mean squares	% of treatment SS	% of GxE
Treatments	54	1622.70	30.05
Genotypes (G)	10	644.40	64.44	39.71
Environments (E)	4	584.70	146.17	36.03
Block	10	228.50	22.85
GxE	40	393.70	9.84	24.26
IPCA1	13	235.20	18.09		59.74
IPCA2	11	95.90	8.72 ns		24.36
Residuals	16	62.70	3.92
Error	100	652.70	6.53
Total	164	2504.00	15.27