Correlation and path analysis on yield and yield components in segregating populations

Seed yield per plant is the main character that is the target of crop improvement. Seed yield can be predicted from the yield component because the seed yield originates from the yield components. The relationship between yield and yield components can appear as direct or indirect effects of yield components to the seed yield. This study aimed to determine the correlation and yield components’ effects on seed yields in F3 populations. The plant materials were 230 F3 lines from the crossing of Burangrang and UM.4-1. The results showed that the number of branches, productive nodes, and filled pods, 100-seed weight, pod weight, and the number of seeds per pod correlated to seed yield per plant. Characters of productive nodes, number of filled pods, 100-seed weight, and pod weight directly affected the plant’s seed yield. The indirect effect of the number of productive nodes on seed yields was significant through the number of filled pods and pod weight. The character of the number of filled pods had an indirect effect through productive nodes, the 100-seed weight, and the weight of pods. The 100-seed weight showed a significant indirect effect on seed yield through the number of productive nodes, filled pods, and pod weight. The significant indirect effect was also shown by pod weight through the number of productive nodes, number of filled pods, and 100-seed weight.