The grains of guar are dehusked mechanically, milled, hydrated and screened according to their use. The guar gum has many industrial applications. It is self-pollinated annual plant having 14 (2n) chromosomes number and belongs to family Fabace. Genus Cyamopsis belongs to sub-family ‘‘Papilionaceae’’ and the tribe ‘‘Indigofereae’’. In the textile industry, it is used in sizing, printing and in finishing. In the paper industry, enhances the sheets formation, folding and gives denser surface for the printing. In the explosion industry, it is used as a waterproofing agent. In milk products it is used as a binding agent. Their genetic diversity can be used as an active tool to predict the association between various characters in genetically different population for improvement of crop enhancement practices. Its yield with different chemical compound trait and is recognized to be related with a number of constituent traits and is extremely affected by environmental deviations. These traits are themselves consistent. The correlation is very significant in plant breeding for its consideration in dependency among two or more characters.