Phenotypic Correlation and Path Analysis in Sunflower Genotypes and Pollination Influence on Estimates

Table 2: Direct (DE) and indirect (IE) effects estimates of agronomic traits on seed yield in sunflower crop under two pollination tests (open and restricted).

Parameters^a	Breakdown of r_xy
Parameters^a	Open	Parameters^a	Restricted
HD		HD
DE via SY	0.009	DE via SY	-0.03
IE via HM	0.39	IE via HM	0.53
IE via NAH	0.15	IE via GER	0.01
IE via GER	0.04	IE via OC	0.004
Total r_xy	0.59	Total r_xy	0.51
HM		HM
DE via SY	0.52	IE SY	0.87
IE via HD	0.007	IE via HD	-0.02
IE via NAH	0.24	IE via GER	0.07
IE via GER	0.07	IE via OC	0.03
Total r_xy	0.83	Total r_xy	0.94
NAH		GER
DE via SY	0.46	DE via SY	0.15
IE via HD	0.003	IE via HD	-0.002
IE via HM	0.26	IE via HM	0.40
IE via GER	0.05	IE via OC	0.36
Total r_xy	0.77	Total r_xy	0.58
GER		OC
DE via SY	0.15	DE via SY	0.05
IE via HD	0.002	IE via HD	-0.002
IE via HM	0.25	IE via HM	0.42
IE via NAH	0.14	IE via GER	0.10
Total r_xy	0.55	Total r_xy	0.58
Coefficient of determination (R²)	0.87	Coefficient of determination (R²)	0.92
Effect of the residual variable	0.36	Effect of the residual variable	0.28

^aHD – head diameter; HM – head mass; NAH – number of achenes per head; GER – germination; OC - oil content; SY – seed yield.