Salt stress physiology is one of the important domains of any field of biology. However, successful development of future applications will depend on the basic domain knowledge. The present book entitled "Salt stress physiological response in tomato" covers maximum aspects of biochemical and physiological responses and it is aimed at readers from multidisciplinary fields of biology. It is an effort to use simple language and detailed research experiment examples throughout the book for better understanding of physiological response and its application. The third chapter has been described in a cognized way with simplest experimental procedures for beginners at under graduate and post graduate level. Results chapters have been incorporated to emphasize the application aspects of physiological response. In contrary, discussion chapter part especially covering physiological responses of different plants are written elaborately for post graduate students and researchers in agricultural sciences.