Subject Index 



541 



Crown gall, permanent change in cells, 

 292 



promotion phase, 294 



secondary tumors in, 292 



steps in development, 293 

 Cucumis, 249, 442 



Cucurbita, 34, 41, 106, 210, 263, 421 

 Cuscuta, 397 



Cybernetics and organization, 457 

 Cycas, 250 

 Cyclamen, 239, 245 

 Cyclophysis, 215 



Cynipid wasps as gall inducers, 283 

 Cystosira, 135 

 Cytisus-laburnum, 268 

 Cytonuclear ratio, 27 



Cytoplasm as morphogenetic factor, 433- 

 436 



cell wall pattern, 433 



dehydration, 40 



in differentiation, 434 



macromolecular patterns, 433 



in reciprocal crosses, 435 



structure, 49 



unequal distribution at division, 435 

 Cytoplasmic pattern in development, 



456 

 Cytoplasmic viscosity, 39 



Dacrydium, 213 



Dactylis, 325 



Dasycladus, 233 



Datura, 89, 222, 261, 270, 273, 296, 440, 



446 

 Dedifferentiation, 181, 232 

 Dehydration of cytoplasm, 40 

 Delphinium, 273, 282 

 Deoxyribonucleic acid, 41, 165, 294, 416 

 Dermatogen, 60 



Determinate structures, growth, 88-91 

 Development, contrasted with growth, 11 



self-regulation in, 452 

 Developmental changes, progressive, 209 

 Dictyostele, 72 

 Dictyostelium, 143, 178, 226, 365, 406 



mutants in, 227 

 Didymium, 314 

 Differentiation, 181-229 



in Acrasiaceae, 223 



at apices, 203 



brachysclereids, 218 



in cambial region, 84, 198 



in cell lineage, 203 



in cell size, 192 



cell wall, 193 



in cells, induced by others, 192 



complex patterns, 202 



cytoplasmic pattern in, 193 



Differentiation, and development, 181, 

 202 



in distribution of nucleic acids, 222 



dormant primordia, 245 



endodermis, 196 



in external structure, 184-189 



fiber patterns, 197 



gametophyte from sporophyte, 185 



and gradients, 218, 222 



and growth, contrasted, 182 

 relative rates, 183 



without growth, 223-229 



growth substances in, 189, 219 



histochemical, 197, 222 



histological pattern, 195 



in internal structure, 189-204 



intracellular, 194 



in Myxobacteriaceae, 228 



during ontogeny, 205-215 



origin, 186 



in osmotic concentration, 222 



physiological, 220-223 



and polarity, 190 



and position, 193 



primordia at meristem, 187 



in pseudoplasmodium, 224 



in relation to environment, 215-220 



between root and shoot, 220 



between sexes, 185 



between staminate and pistillate plants, 

 221 



stomata, 199 



in synthesis of alkaloids, 220 



vascular tissue at apices, 204 



between vegetative and reproductive 

 phases, 184, 205 



veins, 198 



vessels, 201 



wall relationships in, 195 



and water gradient, 218 

 Diffusion-reaction system of Turing, 456 

 Digitalis, 176, 283, 425 

 Dioecious form, origin in maize, 431 

 Dionaea, 345 

 Dioscorea, 123, 429 



Diploid gametophyte, origin from sporo- 

 phyte, 234, 437 

 Divergence angles in polypeptid chains, 



166 

 DNA, 41, 165, 294, 416 

 Dominance of apical bud, 101, 386 



role in, of auxin, 386 

 of nutrients, 387 

 Dormancy and temperature, 339 

 Dorsiventrality, 170-178 



in flowers, 175 



and gravity, 176, 354 



internal structures, 174 



in leaves, 175 



