66 EXPERIMENTAL PLANT PHYSIOLOGY 



Plant b fared better. The lower shoots throve in a 

 normal manner. The leaves of the main shoot drooped 

 more and more until they also hung vertically. They 

 did not fall off, but good winter resting buds were 

 formed in their axils and also a large terminal bud. 



Fig. 32 



Inference. — Putting all these facts together the 

 following conclusions are drawn : 



1. The ringing of the stem does not at first cause 

 any apparent check to the growth of the plant. 



2. Later the growth is checked, and in the case of a 

 the whole plant died. 



3. The difference in the behaviour of the two plants 

 must be due to the development of the dormant buds 

 below the ring in the case of b 



