Subject Index 



543 



Genes, governing shape, evidence for, 419 



in photoperiodism, 432 



and rate of growth, 417 



and sex, 428 



for shape linked with others, 421 

 Genetic constitution as factor in organiza- 

 tion, 450 

 Genetic factors, in morphogenesis, 415- 

 447 



relation to environment, 305 

 Genetic reserve in meristematic cells, 232 

 Genetic segregation of allometric con- 

 stants, 423 

 Genie balance, 446 

 Georgia, 234 

 Geotrophism, 352 

 Germ layers in plants, theory, 59 

 Gibberella, 410 

 Gibberellin, 37, 376, 409 



differences from auxin, 411 



effect on dwarf plants, 410 



morphogenetic effects, 410 



and stem elongation, 410 

 Ginkgo, 159, 189, 237, 378 

 Gleditsia, 91 

 Gleichenia, 238 

 Gmelina, 201 

 Golden mean, 153, 156 

 Gradients, in cell size, 326 



as components of organization, 450 



histological, 140 



metabolic, 73, 140 

 Graft hybrids, 268 

 Grafting, of bud into callus, 72 



as morphogenetic technique, 258 

 Grafts, between male and female plants, 

 263 



between tomato and tobacco, 261 

 Gravity, 354 



and dorsiventrality, 355 



effect, on growth, 354 

 on mitosis, 40 



and flowering, 355 



formative effects, 354 



influence on other factors, 355 

 Griffithsia, 134, 233 

 Group effect in Fucus eggs, 136 

 Growth, 11-22 



analysis, 13 



cellular basis, 23-54 



curve, sigmoid, 13 



definition, 11 



determinate, 19, 88 



differential, 112 



and differentiation, 182 



direction, 51 



distribution, 21 



duration, 20 



exponential, 15 



Growth, of gourd fruits, 12 



indeterminate, 19 



physiology, 21 



rate, 15, 20 



relative, 105 



and size, 20 



variation in, 18 

 Growth substances, 374-414 



in abscission, 404 



in callus formation, 290, 393 



in correlation, 383 



in determination of structure, 390 



differential movement, 384 



in dominance and inhibition, 386 



effects, on cells, 37 



on genetic dwarfs, 377 

 various anatomical, 405 



in flower development, 396 



in growth stimulation, 386 



in internal differentiation, 404 



in leaf development, 394 



mechanism of action, 411 



minimal structural requirements for, 

 412 



other terms for, 374 



in plant growth, 377 



polar transport, 384 



in root development, 391 



and root nodules, 407 



in sex determination, 399 



in stem development, 395 



synthetic compounds as, 374 



types, 376 

 Guttulina, 366 

 Guttulinopsis, 366 



Gymnosperms, shoot meristem in, 68 

 Gynophore, intercalary meristem in, 79 



Haploid sporophytes, 437 

 Hedera, 125, 179, 213, 217, 263 

 Helianthus, 311 

 Helleborus, 346 

 Heterauxesis, 105 

 Heteroblastic development, 206 

 Heterogony, 105 

 Heterophylly, 216 

 Heterosis and cell size, 35 

 Hibiscus, 393 

 Histogens, in root meristem, 75 



in shoot meristem, 60 

 Hofmeister's rule, in cell division, 44, 80 



in phyllotaxy, 159 

 Homeosis, 110 

 Homeostasis, 2, 452 

 Homoblastic development, 206 

 Hormone, use of term, 375 

 Horseradish roots, regeneration in, 248 

 Humulus, 430 



