670 



INDEX 



Riddle, sex control, 545 

 Ridgway, color standards, 271 

 Riley, telegony, 564 

 Rimpau, broad breeding, 335 



hybridization, 294 



Schlanstedt rye, 292 

 Ritzman, sheep, 463 

 Roberts, turkey wheat, 336 



immediate effects of crossing, 360 

 Rogers, grape hybridizer, 290 

 Roguing, practical value of, 418 

 R61e of, factor mutations in evolution, 286 



selection in breeding, 333 

 Rommel, telegony, 568, 569, 570 



zebra hybrids, 520, 569 

 Root crops, species and varieties, 302 

 Rfirig, species hybrids, 228 

 Rosa, see Rose. 



Rosanoff, hereditary taints, 526 

 Rose, creation of varieties, 310 



hybridization by Romans, 287 



My Maryland, 398 



species and varieties, 302, 310 

 Roses, bud selection in, 398 

 sports in, 398 



hybrid, 311 



Hybrid Bourbons, 311 



Hybrid Chinese, 311 



Hybrid Perpetual, 311 



Hybrid Tea, 311 

 Roux, chromatin forms, 115 

 Rubber tree, dimorphic branches, 275 

 Rubus, species hybrids, 297 

 Rudimentary wings in Drosophila, 554 

 von Riimker, inbreeding rye, 319 

 Running out of varieties, 340 

 Rust, biologic forms of, 412 



-resistant asparagus, 415 



wheat, creating, 411 

 Rye, 317, 319 



crossed with wheat, 229, 236 



eight chromosomes, 238 



line selection, 293 



remnant system, 335 



reputed self-sterility, 319 



Sageret, species hybrids, 230 

 Salmon, Erysiphe, 413 

 Salsify, first hybridized, 438 

 Salt bushes, Australian, 401 



grass, 401 

 Sambucus glauca, 17 



nigra variegata, 381 



Sanborn, increased yield from hybrids, 354 

 Saturation, 571 



Saunders, A. P., Marquis wheat, 294 

 Saunders, Miss, stocks, inheritance in, 166, 167 

 Saunders, Wm., apples, 297 



cold resistant fruits, 408 

 Scardafella inca, 24, 25 

 Science and plant breeding, 437 

 Scilla, 25 



Scion and stock, reciprocal effects, 382, 383 



Scrophularia, 27 



Scrub cows, records of, 455 



Search for mutations, 370, 464 



Secondary, non-disjunction, 200 



sexual characters, 214, 548 

 Sectorial chimera, 375, 376, 380 

 Sedum spectabile, 21 

 Seed, corn, centralized production, 361 

 hybrid, 361 



impurity of commercial, 428 



introduction, 299 



selection, value of, 335 

 Seedage, methods of, 419 

 Segregation, 57, 64, 67, 81, 94, 108, 188, 453, 515 



discovered by Naudin, 439 



evidence of, in quantitative inheritance, 181 



in species hybrids, 220, 224 



mechanism, 61, 274 



of size factors, 184 



somatic, a misleading term, 275 



vs. vegetative mutation, 272, 274 

 Selby and Houser, tobacco, 363 

 Selection, 11, 250, 325 



and breeding methods, 500 



and correlation, 49, 506 



and variation, 325 



as a cause of variation, 454 



bud, 298, 385, 386, 391 



changes position of mean, 188 



clonal, 291, 298 



ear-to-row, 327, 334 



effect of, in pure lines, 254, 257, 339 



for disease resistance, 416 



genotypic, 262, 425, 496, 584 ' 



guided by progeny tests, 498 

 by registration rules, 496 



in creating varieties of plants, 302 



in maize breeding, 325, 333, 334 



in sweet peas, 309 



in wheat, 336 



indices, 334, 502 



individual plant, 340 



isolation view of, 502 



line, 291 



mass, 260, 291, 498 



natural and evolution, 5, 276, 286 



not creative, 502 



of disease -resistant strains, 417 



of phenotypes may not isolate genotypes, 261 



of profitable strains, 432 



phenotypic, 578 



plant-to-row method, 337 



plus and minus in hooded rats, 191 



problem in animal breeding, 495 



remnant system, 335 



results of, in hooded rats explained, 191, 192 



two views regarding, 495 



value of seed, 335 

 Self-fertilized plants, selection in, 336 



populations of plants, 320 

 Self, colors, mutations, 272, 273 



-fertilization, effects of, 256, 320 

 Semon, "Mnemetheorie," 483 



