850 



Subject Index 



Triticum (continued) 



cylinder test 



growth stimulants, 74 

 histogram, 80, 83, 86, 88 



leaf base test, 131, 132 



leaf extracts, 150 



roots, 219, 223, 225 



seedlings, 780, 781 

 TRPH = tryptophan, 45, 93, 146, 181 

 Tryptamine = TRAM, 94, 181 

 Tryptophan = TRPH 

 Tryptophan-like metabolite, 768 

 Tryptophol = indole-3-ethanol 

 Tube structure, in cell walls, 319 

 Tumor inhibiting antibiotic, 649, 650 

 Turgor of cell, 381 

 Turnip = Brassica rapa 

 Tween stimulation of auxin action, 421 

 Two-point attachment 



hypthesis, 440 



of plant growth regulators to proteins, 

 431 

 Tyramine as antioxidant, 347 

 Tyrosine, 605 



u 



Ultraviolet decomposition products of in- 

 dole compounds, 182, 185, 187 

 Ultraviolet spectra; see also Spectra 



absorption spots, 188 



chlorophenoxyacetic acids, 292, 294 



lAA, oxidation of, 206, 207 



indol-3-alkanoic acids, 212 

 Unsaturated hydrocarbon derivatives as 



antioxidants, 344 

 Uptake of 



2,4-D, 234, 235, 236, 239 



TIBA, 243 



urea, 798, 799, 800 

 Urea translocation, 794, 795 

 Uredospores, 737 



Vitamin B12 



and non-reversal growth inhibition by 

 antiauxins, 605 



effect on Euglena, 19 

 Vitamin E, 605 

 Vitamin K, 605 

 Vitamins, 18 



VMe = methyl 5- (indole-3-) valerate 

 VNH2 ^ 5-(indole-3-) valeramide 

 Volatile substances, 188 



w 



Wall pressure = WP, 308 

 Water soluble 



growth substances, 60, 64 



radioactive fraction, 758 

 Weigela, 507 



Weight increase in potato tuber disks, 366 

 White's medium, 275 

 Woodsia obtusa, 711 

 Woodsioids, 710 

 Woody shoot inhibitor, 127 

 WP = wall pressure 



Xanthium. 



dormancy in, 100 

 leaf senescence, 329 



kinetin, efFect of, 389 

 MH, GA, and Amo-1618, effect on in- 

 hibition mitoses in apical meri- 

 stem, 574 

 Xylem cell regeneration through auxin, 

 405 



Yeast extract and non-reversal growth in- 

 hibition by antiauxins, 605 



DL-valine interaction with lAA, 605 



Values of S/'^', 250 



Vascular stem tissues and auxin trans- 

 port, 404 



VCN == §-(indole-3-)valeronitrile 



Verticillum alboatruni, 134 



Vicia faba, 43 



GA, effect on tissue culture, 681 

 GA and 2,4-D, interaction, 683 

 radiation sensitivity of stem, 547 



Vigna sinensis, 678 



Vinca rosea, 678 



Virus tumor tissue culture, 678 



Visible radiation; see also Light 

 and growth hormones, 548 

 nature of, 544, 545 



Zea mays = maize, 489 



dwarf, 616 



dwarfing genes, 489 



dwarfism, 490 



GA in, 489 



homogenate, 620 



mesocotyl, geotropism of, 327 

 Zea saccharata, 678 

 Zebrina pendiila, 796 

 Zinnia elegans, 606 

 Zone R, chromatogram of, 28 

 Zone X, chromatography of, 27 

 Zone Z, 



chromatograms of, 29 



chromatography of, 27 



