Correlation and Path Coefficient Analysis in Yield and Yield-Related Components of Black Cumin (Nigella Sativa L.) Accessions, at Jimma, Southwest Ethiopia

Table 3

Phenotypic direct (bold) and indirect effect (off diagonal) of 16 traits on grain yield.

	BLM	FLR	PBR	SBR	TBR	TOBR	GRZ	HT	BY	NEC	HI	RP
BLM	−0.039	−0.010	0.000	0.001	0.013	−0.009	0.005	0.002	−0.062	−0.040	−0.153	−0.291
FLR	−0.023	−0.016	0.000	0.001	0.013	−0.011	0.002	0.008	0.008	−0.051	−0.224	−0.292
PBR	−0.006	−0.002	0.003	−0.006	−0.009	0.038	0.028	−0.052	0.249	0.147	0.141	0.531
SBR	0.005	0.003	0.002	−0.008	−0.019	0.049	0.024	−0.050	0.252	0.165	0.238	0.660
TBR	0.018	0.007	0.001	−0.005	−0.029	0.039	0.010	−0.029	0.082	0.108	0.290	0.492
TOBR	0.007	0.004	0.002	−0.008	−0.022	0.051	0.022	−0.050	0.228	0.164	0.280	0.678
GRZ	−0.005	−0.001	0.003	−0.006	−0.008	0.032	0.035	−0.049	0.212	0.139	0.169	0.521
HT	0.001	0.002	0.002	−0.006	−0.011	0.035	0.024	−0.072	0.195	0.178	0.308	0.656
BY	0.003	0.000	0.001	−0.003	−0.003	0.016	0.010	−0.019	0.739	0.098	−0.438	0.404
NEC	0.007	0.004	0.002	−0.006	−0.013	0.036	0.021	−0.055	0.308	0.235	0.297	0.834
HI	0.007	0.004	0.001	−0.002	−0.010	0.017	0.007	−0.027	−0.389	0.084	0.833	0.525

Residual effect = 0.253933. BLM = days to 50% blooming, FLR = days to 50% flowering, PBR = number of primary branches, SBR = number of secondary branches, TBR = number of tertiary branches, TOBR = number of total branches, GRZ = girth (thickness), HT = stem height, BY = biological yield, NEC = number of effective capsules per plant, HI = harvesting index, YH = seed yield ha⁻¹, and RP = phenotypic correlation.