The investigation was undertaken to understand the genetic variability present in the 17 fieldpea genotypes grown under protected irrigation at the marginal soils of foothills of Manipur. The significant variability was recorded for traits studied except days to attain 50% flowering. In Principle Component Analysis, there are two Eigen values greater than 1 which determined the choice of the two principal components (PCs), and the first and second component had 60% and 18% of the total variance, respectively. The 1st component was strongly influenced by characters such as plant height, days to 50% flowering and maturity pods/plant, whereas 2nd component was largely influenced by the characters such as seed yield and 100 seed weight. Genotype ‘HFP 9426’ was positively characterized by both the components (PC1 and PC2). The genotypes arranged in bipolar plane clearly exhibited that pods/plant, days to 50% flowering and maturity were with greatest length and directly helped to determine the level of Agro-morphological diversity. The genotypes of fieldpea studied using cluster analysis had formed three different groups.
Correlation, Cluster analysis, Fieldpea, Genetic Variability, Principal component analysis
