This book serves an approach towards fine mapping of Saltol QTL. Here a gene based molecular technique is used.Saltol QTL is an important gene responsible for the salinity tolerance of Rice. Salinity is a major cause for low production of rice in the coastal areas all over the world. In this book, we tried to develop a solution using molecular techniques which are fast and reliable. This books will help those who wants to widen their knowledge in advanced molecular research.