FREDERICK G. SMITH 



113 



TABLE 1 

 Growth substance effects in isolated organs and tissues 



Potato tuber 



streaming 

 lAA 10 +50 Sweeney (33) 



ca. 70 —30 



Avena root lAA o.oooi- +25 to + 30 Sweeney (34) 



0.0000 I 



I +10 to o 



10 -13 



Dry weight Water uptaJ^ 

 decrease 

 1+34 +34 Reinders (28) 



10 +71 +46 



100 (became flaccid and died) 

 10 +25 Commoner, 



Fogel and 

 100 —12 Muller (14) 



O2 uptake 

 20 max. Kelly (17) 



40 max. 



o . I Nitrate uptake 



— 13 Nance (25) 



I —42 



5 +20 to +40 ~6t, 



lAA 



lAA 



Avena coleoptile lAA 

 Wheat root 2,4-D 



♦Percentage change from control; many figures estimated from graphs. 



