BOTANICAL APPLICATIONS 



was able to resolve sub-microscopic filament- on their development (39, 40). The various 



like elements. stages in the development of the barley 



Plastids. These have received a great deal chloroplast are shown in Figure 10. Firstly 



of attention, much work being carried out (1) a proplastid develops in the leaf meri- 



FiG. 10. A diagrammatic representation of the barley chloroplast (see text). (After Diter 

 von Wettstein, courtesy of Hereditas) 



87 



