PJB-2003-47
DETERMINING RELATIONSHIPS AMONG YIELD AND YIELD COMPONENTS USING CORRELATION AND PATH COEFFICIENT ANALYSES IN SUMMER SOWN COMMON VETCH (VICIA SATIVA L.) GENOTYPES
SADIK CAKMAKCI*, BILAL AYDINOGLU AND MEHMET KARACA
Abstract
Common vetch (Vicia sativa L.) is an important leguminous crop. Its breeding program can be improved by understanding the interrelationships among yield and yield components. Using 152 summer-sown genotypes originated from different sources, the present study was conducted in Mediterranean basin of Antalya, Turkey, with the aims to determine relationships among 13 agronomic characters and evaluate estimates of predicted direct and indirect responses to selection for characters using correlation and path coefficient analyses. Results based on the correlation analysis indicated that seed yield was correlated positively with biologic yield (0.810**), spring vigor (0.681**), number of seeds per plant (0.486**), harvest index (0.423**) and number of pods per plant (0.418**). However, when path coefficient analysis split the correlation coefficients into direct and indirect effects, the significant direct effects on the seed yield were biologic yield (0.795), harvest index (0.490) and number of seeds per plant (0.105). Biologic yield was correlated positively with seed yield (0.810**), spring vigor (0.777**), number of seeds per plant (0.462**), number of pods per plant (0.450**) and plant height (0.301**). There was negative direct effect of harvest index on biologic yield (-0.470). Overall results suggested that common vetch breeding studies should focus on biologic yield, harvest index, number of seeds per plant for seed yield, and seed yield, spring vigor and harvest index traits should be taken in account for biologic yield.
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