The technique of chlorophyll fluorescence has a relatively short history, beginning with the observations by Kautsky (Kautsky and Hirsch, 1931). Since that time there have been several- reviews devoted to the subject, with most of them highly theoretical (Bohlar-Nordenkampf and Oquist, 1993; Dau, 1994; Schreiber et aI., 1994). There have also been many books devoted to generalized spectrophotometric and microscopic fluorescence techniques. However, to the best of our knowledge there has not been a book completely devoted to the practical applications and uses of chlorophyll fluorescence in...