The objective of maintenance breeding is to maintain and purify the pedigrees (parental lines) of hybrids or varieties. Thus, the genetic identity and purity of the hybrids can be preserved against various factors affecting the genetic deterioration viz., genetic erosion, admixtures, selective influence of pests & diseases etc. We wish to achieve the goal of maintenance breeding i.e., preserving the genes, traits, characters, hereditary factors which make one aspect of a breed or species different from another for the future. We would consistently adopt paired crosses approach for purifying all the lines.