Subject Index 467 



for exjianding buds, 384 



experimental growth, 21 1—49 



fibroblast cultures, 30 



grafted sarcoma of mouse, 26 



neoplastic growth, 25r)-7U 



neuroblasts of grasshopper, 32, 33, 66. 

 70 



in plants, 383-86 



polarization microscope, 75 



pollen, 1 1() 



pollen mother cells, 110-13 



pollen tube, 37, 108, 383 



pohploidv 



in animals, 58, 60, 380-83 

 in plants, 20, 57-58, 384-85 



regenerating li\er cells, 44 



seedling, 384 



Siredon, 45 



solutions used, 373-74 



staminal hair cell, 73, 385 



for stiid\ of mitosis, 374-80 



temperature, 374 



tissue cidture, 378-79, 385 



tissue of tumors, 385 



Triton, 40 



Triturus, 40, 43 



T II hi f ex eggs, 54 

 Telophase. .50, 65, 94, 117, 222, 376-78 



agglutination at, 52 



arrest reduces, 28-30 



chromosomes of pollen tube. 108 



colchicine and, 50 



despiralizing stages at, 51 



mitotic counts, 378 



percentage decreases, 30 



recovery in plants and, 94 



restitution nucleus via c-telophase, 93 



root tip percentages of, 34 



in topography of mitotic growth, 375 

 Temperature, internal, 179 



action on toxicitv of colchicine, 194, 

 203 



effect of low, 415 

 Testis, interstitial cells, 226, 236 

 Testosterone, 217. 218, 232 



propionate, 219, 233, 234 

 Tetramethoxy-9-methvlphenanthrene, 

 164 



Tetramethoxy lO-methvlphenanthrene, 



163 

 Tetramethoxy-9-phenanthraldehyde, 162 

 Tetramethoxvphenanthraquinone, 162, 



163 

 Tetramethoxyphenanthrcne-10- 



carboxylic acid, 162 

 4, 5-Tetramethvlene-tropolone, 417 

 Tetraploid, 276, 282, 283, 382: see also 

 Autoploidy, Autotetraploid, Poly- 

 ploid 

 AUiuiu. 25, 27, 28. 35. 79 

 alio-, 292-312 



appearance of, 363 



auto-, 318-19 



cell, 95 



chimeras, 356 



colchicine method to make, 274-75 



tliploid h\i)rids as fertile, 362 



flower, stem apex, 349 



fruit and seed of, 363 



in Gossxpium, 304 



in grapes. 324 



induced in plants, 383-85 



kernel weight in rve, 366 



leaf of, 363, 368 



mitoses of, 97 



natural, in cotton, 283 



natural tetraploid cell in Polys;o>i(itum. 

 37 



performance of. 319-20 



in phlox, 364 



physiological features of, 367-68 



in plants. 56 



in pohploidv breeding, 285 



raw, 321 



in red clo\er, 368 



reiteration of the c-mitosis, 55-56 



sex stability in, 351-54 



single c-mitosis, 55 



in steel rve. 319 



in strawljerry, 324 



successful genotvpes, 283 



in sugar beet, 332-33 



superiority of, 320 



treatment at anaphase, 70-72 



in Triturus. 43 



use of. to make triploid, 285, 326, 

 327, 328 



in J'itica, 349 



in watermelon, 327-30 

 Tetraploid wheat, 295 



duriuii, 295 



emmer, 295 



T. persicum, 295-96 



T. timopheevi, 298 

 Thalassemia, 224 

 Thermodynamic activity, 400, 407 

 Thiouracil, 238, 248-49 

 Thorn test, 197 



Thousand grain weight in rve, 365 

 Ihreshold concentrations, 385 

 Thrombin. 194 

 Thromljopenia. essential, 189 

 Thymic cortex, 178 

 rinnionucleic acids, 53 

 1 Inmus, regeneration, 241 



cells of, destruction, 261 

 Thvroid, 227. 230. 269 

 Ihvroidectomy. 249, 288 

 Thyrotropic hormone, 226, 228, 229, 248 

 rh\r()xin.238 



and kitlncv Injjertrophy, 241 



