AMMI Stability Analysis and Estimation of Genetic Parameters for Growth and Yield Components in Cassava in the Forest and Guinea Savannah Ecologies of Ghana

Table 5

Estimates of variance components, broad sense heritability, PCV, and GCV for six traits in 20 cassava genotypes from four environments.

Parameter	Traits
	Plt_ht (cm)	Ht_branch (cm)	St_diam (cm)	Rt_yld (t/ha)	HI	DM (%)
	746.98	630.94	0.013	24.85	0.003	4.90
	72.47	111.68	0.012	6.07	0.001	2.38
	843.90	387.10	0.091	45.08	0.004	13.27
	901.67	805.59	0.031	47.66	0.004	6.30
	82.84	78.32	43.08	43.46	71.66	77.7
GCV (P)	14.75	36.19	5.14	18.36	9.79	6.53
PCV (G)	15.70	38.89	7.06	21.93	10.81	7.46
P-G	0.95	2.70	1.92	3.57	1.02	0.93
GA	51.25	45.79	0.16	6.77	0.10	4.02
GAM	27.66	65.98	6.94	27.31	17.06	11.86

variance,    environment variance, variance, variance, sense heritability, GCV = genotypic coefficient of variation (%), PCV = phenotypic coefficient of variation (%), GA = genetic advance, GAM = genetic advance as percentage of the mean, Plt_ht = plant height (cm), Ht_branch = plant height at first branching (cm), St_diam = stem diameter (cm), Rt_yld = root yield (t/ha), DM% = storage root dry matter content (%), and HI = harvest index.