Fig. 2, Successive stages in the diseases caused in Turkish tobacco by TMV (top) and 

 the strain J14D1 (bottom). As illustrated, plants infected with TMV will survive to the 

 flowering stage and produce viable seed; in contrast, young tobacco plants infected with 

 J14D1 strain are almost certainly killed, o\a ing to the extensive necrotic effects of this 

 strain. 



