Determining relationships among yield and yield components using correlationand path coefficient analysis in summer sown common vetch (Vicia sativa L.)genotypes
2003
Cakmakci, S. | Aydinoglu, B. | Karaca, M.,Akdeniz Univ., Antalya (Turkey). Dept.of Field Crops
Common vetch (Vicia sativa L.) is an important leguminous crop. Its breedingprogram can be improved by understanding the interrelationships among yield andyield components. Using 1.52 summer-sown genotypes originated from differentsources, the present study was conducted in Mediterranean basin of Antalya,Turkey, with the aims to determine relationships among 13 agronomic characters andevaluate estimates of predicted direct and indirect responses to selection forcharacters using correlation and path coefficient analyses. Results based on thecorrelation analysis indicated that seed yield was correlated positively with biologicyield (0.810**), spring vigour (0.681**), number of seeds per plant (0.486**), harvestindex (0.423**) and number of pods per plant (0.418**). However, when pathcoefficient analysis split the correlation coefficients into direct and indirect effects,the significant direct effects on the seed yield were biologic yield (0.795), harvestindex (0.490) and number of seeds per plant (0.105). Biologic yield was correlatedpositively with seed yield (0.810**), spring vigour (0.777**), number of seeds perplant (0.462**), number of pods per plant (0.450**) and plant height (0.301**). Therewas negative direct effect of harvest index on biologic yield (-0.470). Overall resultssuggested that common vetch breeding studies should focus on biologic yield,harvest index, number of seeds per plant for seed yield, and seed yield, springvigour and harvest index traits should be taken in account for biologic yield.
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