354 



Index 



Tomato o\ary test, 45, 58 

 Toxic metabolism, 185, 275 

 Toxicity, environmental factors, 149 



nutritive effects, 148 



to animals, 274 

 Tradescantia, 234 

 Translocation, see also Movement, 141, 



146, 284 

 Transplanting, 209 

 Transport, see Movement 

 Traumatic acid, 70 

 Traumatropism, 100 

 Tree fruit abscission, 11 

 Trichloroacetic acid, 292 

 Trichloroanisole, 168 

 Trichlorophenoxyacetic acid, 146, 168, 

 282, 283 



fruit drop control, 244 



fruit maturation, 295 



fruit thinning, 236 



herbicide, 282 



Rf values, 51 

 Trichlorophenoxyisobutyric acid, 299 

 Trichlorophenoxypropionic acid, 207, 

 229 



fruit drop control, 244 



rooting effect, 207 

 Triethanolamine, 284 

 Tri-iodobenzoic acid, 160, 171, 300 



abscission effect, 113, 172 



apical dominance effect, 301 



flowering effect, 173. 259 



mold spores affected, 300 



R( values, 51 



synergism, 162 

 Trinitrobenzene, 68 

 Tropisms, 3, 96, 304 



anti-auxin effects, 169 



root, 99 

 Tryptamine, 77 

 Tryptophan, 68, 76 



R, values, 51 



zinc deficiency and, 75 

 Tubes, pollen, 233 



Tunica, 106 



Turnip, 63 



Tween 20, 44 



Two-point attachment, 166, 176 



Ultraviolet light, 89 

 Umbelliferone, 173 

 Uncoupling agents, 126, 182, 190 



dinitrophenol, 129, 298 



natural, 298 

 Urine, 152 



Van der Waals' forces, 196 

 \'elvet leaf, 288 

 \'ermiculite, 31, 34, 36 

 Vernalization, 93, 116, 259, 260 

 Vicia faba, 61 

 Victory oats, 21, 34 

 \'inylacetate, 165 

 Virus, auxin inhibition, 299 

 Viscosity, cytoplasmic, 181, 183, 276 

 \'itamins, 4, 213 

 \olatility, 290 

 esters, 193, 284 



\Vater, solvent for auxin, 15 

 of crystallization, 190 

 dinitrophenol effect, 184 

 phosphorylation role, 129, 184 

 uptake, 29, 182 



Watermelon, 221 



Wettability of foliage, 137, 280 



Wettable powders, 191 



Wheat, 63, 71, 277 

 rust, 300 



Wounding, 83, 210 



WuchsstofJ Avena Einheit, 28 



X-rays, 92, 101, 209 



Xylem, translocation in, 144, 221 



Zinc, 75 

 Zinnia, 101 



