Figure 4-3 

 The effects of cold or gibberellins on the flowering and growth of a cold 

 requiring plant (Carrot, Early French Forcing). Left: control main- 

 tained above 17 C; right: 8 weeks of cold treatment; and center: lO^gof 

 gibberellins daily. The flowering plants are 1 m tall. Photograph used 

 by permission (see Anton Lang, 1957, Proc. Nat. Acad. Set. 43, 709-717). 



