892 



SUBJECT INDEX 



Gonyaulax (Continued) 



luminescence, 567-573, 575, 579, 

 581 

 emission spectrum of, 567 

 rhythms, 567 ff. 



effect of light on, 568-570, 

 572-575, 578-580 

 Grafting 



and flowering, 247, 250 

 Growth, 507 



compensatory, 393-406 

 heterotrophic, 448, 451 

 rate of testicular, 718,721, 722 

 Growth inhibitors 

 in birch seed, 79 

 effect of daylength on production 



of, 83 

 in seedlings of Acer, 83 

 Guanosine 



as inductive agent in flowering, 

 420 



Hemiparetics, 834 

 Homoptera 



photoperiodism in, 602 

 Hormone, flowering, 382, 413, 

 414 

 definition of, 412 

 destruction of, 415 

 synthesis of, 247, 251, 252 

 translocation of, 383 

 5-Hydroxyindoleacetic acid, 830 

 5-Hydroxytryptamine, 830 

 Hymenoptera 



photoperiodism in, 602 

 Hyoscyanms, annual strain 

 elongation, flowering, 113-119 

 effect of gibberellic acid, 114- 



116, 118 

 effect of spectral regions, 113- 



119 

 inhibition by red and green 

 radiation, 113-115 



promotion by blue and near 

 infrared radiation, 113- 

 115 

 Hypophysectomy, 731, 832 

 Hypophysis, 801 



Hypothalamus, 645, 647, 724, 833, 

 838,841 

 functions of, 646 

 hormone production by, 646 

 photoreception in, 728-730 

 and reproduction, 646 



lAA, see Indoleacetic acid 

 Indoleacetic acid, 307, 384, 385, 



393, 396-400, 402, 406 

 destruction of, 188,189, 191 

 Indoleacetic acid oxidese 

 cofactorfor, 153, 154, 156 

 effect of dialysis on activity, 143, 



155 

 effect of light on, 138, 139, 145- 



147, 155, 156 

 effect on pea internode section 



growth, 181, 186-195 

 in green peas, 140-156 

 inhibitor of, 138-156 

 interaction with red and far-red 



radiations, 181, 186-195 

 Infrared (near) 



effect on ^ ve/jfl coleoptiles, 126 



de-inhibition of elongation, 126 

 effect on Hyoscyamus, 1 1 3-1 19 



elongation, 113-116, 118, 119 



flowering, 113-115, 118 

 generation by chlorophyll fluores- 

 cence, 1 19 

 interaction with gibberellic acid, 



113-116, 118 

 Inhibitors 



endogenous in photoperiodism, 



226,229,235,237 

 Insects, 586, 587, 592-598 



cholinergic material in brain, 593 



