Evaluation of Genetic Variation and Correlation Among Yield and Yield Components in Soybean Genotypes Using Multivariate Analysis

In order to evaluate genetic variation and path analysis of yield components andgrain yield, 49 soybean genotypes were studied based on simple lattice design. Analysisof variance based on lattice design revealed significant differences among the genotypesfor all the traits. The results of path analysis revealed that among yield components,1000-seed weight showed significant positive direct effects on grain yield and numberof seeds per pod and pods per plant were stayed in next step. Number of branchesshowed significant positive direct effect on pods per plant but it showed significantnegative direct effect on seeds per plant. The genotypes showed maximum andminimum genetic variation for number of branches and pod length, respectively. Resultsof factor analysis revealed nominal yield components in first factor showed the mostvariation among the genotypes and the second factor expressing the metric yieldcomponents. In this study the genotypes M-45, Mustung, TN6.90, Calnoax and Tellarwith the means of seed yield 4830, 4590, 4685, 4520 and 4380 kg ha-1 respectively,have considered as suitable genotypes for this trait and also they were classified as onestatistical group, respectively.