Fig. 11. Influence of gravity on shoot formation in horizontally suspended 

 stems. The stems were originally straight but underwent geotropic bending 

 during the experiment. In the stems to the right one leaf is left at the lower 

 side of apex. In this case the shoots in the first node will grow out in half of the 

 stems; in the second node only the upper bud will grow out. In the stems to the 

 left the leaf is on the upper side. In this case the shoots in the first node are 

 prevented from growing, and only the lower bud in the second and fourth node 

 can grow out. Duration of experiment, Sept. 29 to Nov. 12. 



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