INDEX 



473 



Tree girdle, 402-403 

 Tropisms, 144, 433 

 TuMANOv, 313, 373 

 Turgor, 17-23, 312, 447 

 Turgor pressure, 17, 22-24 



U 



Unavailable water reserve in the soil, 



289 

 Urea, 69, 75-76 

 Ursprung, 24, 117, 331 

 uspensky, 272 



Van't Hoff's rule, 91-92, 204-206 

 Vegetative propagation, 398 

 Vernadsky, 240 



ViNOGRADSKY, 183, 229 

 VOTCHALL, 336 



w 



Walter, 136-137, 371 



Warburg, 86 



Warburg's theory, of photosynthesis, 

 187 

 of respiration, 104 



Water balance of plants, 279-282, 

 311 

 of arid regions, 313 



Water-balance influence on repro- 

 ductive phase, 439 



Water cultures, 240-243 

 Water deficit, 310-311 

 Water-retaining force of the soil, 287 

 Water supply and growth, 135-139 

 Wax, 48 

 Went, 125-126 



Wieland's theory of oxidation, 102 

 WiLLSTATTER, 61-63, 174, 180 

 Willstatter's theory of photosynthe 



sis, 184-187 

 Wilting, 311-314 

 Wilting coefficient, 289 

 Wilting methods, 368 

 Windscorch of grain, 365, 383 

 Winkler, 405-407 

 Winter resistance, 355-356 



X 



Xanthophyll, 171-172 

 Xanthoprotein reaction, 51-52 

 Xeromorphism, 370 

 Xerophytes, 365-369 



YOKUM, 70 



Young, 91 



Z 



Zalensky, 369-370 



Zalessky, 228 



