Genotype X Environment Interaction and Yield Stability in Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) Landraces in Ethiopia

Table 5

Mean square from combined ANOVA for yield-related traits of 25 cowpea landraces tested at five environments.

Source	Df	DF	DM	PH	PPP	SPP	HSW
Genotype	24	41	100	1135	26	6	1103305
Environment	4	1668	3060	98526	5579	203	8681504
Rep (env.)	10	7ns	10 ns	243	109	4	261579
Interaction	96	28	74	733	42	7	652912
Pooled error	240	4	10	88	5	2	48553

 = Significant at ;  = significant at , ns = nonsignificant; df = degrees of freedom; DF = days to flowering; DM = days to maturity; PH = plant height; PPP = pod per plant; SPP =seed per pod; HSW = hundred seed weight.