686 



SUBJECT INDEX 



Globulins, 72, 446 



Glucose, 321-322, 372, 377, 543 



Glutamic acid, 448 



Glutamine, 448-449 



Glutathione, 420, 535, 546 



Glutelins, 446 



Glycerol, 121, 392, 393-394, 396, 



543 



Glycine, 438, 443, 444 



Glycogen, 378 



Glycolase, 531, 543 



Glycoproteins, 447 



Glycosides, 381 



Gradients, diffusion, 90, 1 50, 193, 

 199, 203-204, 235, 277, 279 



Graham's law of diffusion, 89 



Grand period of growth, 566-567 



Growth, 



daily periodicity of, 643-645 

 dynamics of, 551-559 

 effect of carbohydrate and nitro- 

 gen metabolism on, 452 

 effect of gases on, 610 

 effect of infrared on, 600, 601 

 effect of light duration on, 601-607 

 effect of light intensity on, 596- 



599, 644 

 effect of light quality on, 599-601 

 effect of soil aeration on, 609 

 effect of temperature on, 589-591, 



644, 646 

 effect of ultraviolet on, 600 

 effect of water on, 607-609, 643- 



644 

 effect of X-rays on, 600 

 indices of, 564 

 phases of, 551-559 

 primary, 550-55I, 562-564 

 rates, 568-569 

 role of mineral elements in, 415- 



417, 420-427, 609-610 

 role of nitrogen and carbohydrates 



in, 450-453 

 seasonal periodicity of, 645-648 

 secondary, 219-220, 559-562 

 vegetative and reproductive, peri- 

 odicity of, 648-649 



Growth correlations, see correlations 



Growth curves, 564-568 



Growth hormones, 572 



Growth of leaves, 562 



Growth of roots, 269-273, 276-277, 



558-559 

 Growth of stems, 551-558 

 Growth movements, 653-654 

 Growth substances, 572 

 Guard cells, 157, 158, 174-175, 176 



osmotic pressure of, 185-186 



pH of, 185, 187 

 Gums, 380 

 Guttation, 1 69-1 71 



Hairs, epidermal, effect on transpira- 

 tion, 202-203 

 Hardening, 592-593 

 Heartwood, 223-224, 236 

 Heat of imbibition, 109 

 Heat of respiration, 510-513 

 Heat resistance, 594-596 

 Hemicellulases, 470, 479 

 Hemicelluloses, 69, 379 

 Henry's law, 9 

 Heteroauxin, 577, 581 

 Hexosans, 375-378 

 Hexose diphosphate, 544 

 Hexoses, 372-373 

 Hilum, 625 

 Histones, 446 

 Hormones, 572, 582-583, 598, 606- 



607 

 Humidity, 193-194 



effect on transpiration, 194-195 

 Humus, 248-249 

 Hydathodes, 1 70-1 71 

 Hydration of ions, 20-2I 

 Hydration of micelles, 36, 39-40, 51 

 Hydration of molecules, 20 

 Hydration of protoplasm, 



in relation to enzymatic activity, 



474 

 in relation to growth, 554, 556, 



607, 644 

 in relation to permeability, 125 



