INDEX 



651 



Bison amcricanus, 533 



americanus X Bos taurue, 230. 620, 533, 542 



disease immune, 529 

 Bittersweet, graftage of, 374 

 Bizarria, 378 

 Blair, truck crops, 441 

 Blake, bud selection, 398 

 Blakeslee, egg production, 507 

 Blakeslee and Warner, poultry studicx, 507 

 Blastogenio characters, 480 

 Blending inheritance recognized by ('antic, 180 

 Blood eye color in Drosophila, 150 

 Blount, grain rust, 4H 



hybridization of plants, 294 

 Blue Andalusian fowls, 152 

 Bolley, flax, 417 

 Bos taurus hybrids, 230 



sterility of, 557 

 Boshnakian, Boston fern, 313, 314 



Nephrolepsis, 316 

 Boston fern, dwarfing, 315 



increase in leaf division, 315 

 in ruffling, 315 



origin of varieties in, 312, 391 



progressive mutations in, 315 

 Boyd, polled Herefords, 463 

 Brassica campestris, 19 

 Breeder, animal, equipment of, 450 

 Breeders, beliefs of, 564 

 Breeding, and chromosome numbers, 342 



animal and plant compared, 447 



art of, 447 



conservative and constructive, 440 



cooperative, 600 



defined, 11 



disease-resistant plants, 295, 400 



for immunity, 529 



from the best, 493 



genetic investigations needed, 610 



investigations, 591 



maize, 325 



methods and selection, 500 



of crop plants begun, 288 



operations, planning, 440 



other knowledge needed, 611 



pedigree, 580 



plant, 287, 291, 299 



practical genetics and, 449 



problems of animal, 447 



projects, 440 



systems, 580 



value and modifiability, 456 



wheat, 336 

 Breeds, dual purpose, 515 



knowledge of, 451 



utilization of older, 448 

 Brentana, Phasianidse, 521 

 Bridges, chromosomes, sex, 555 



crossing-over dependent on age, 120 



"deficiency," 121, 155 



eosin eye color, modifiers, 192 



interference and linkage, 124 



lethal factor, 546 



multiple allelomorphs in eye color, 161 



Bridges, non-disjunction. 198-205 



sterility in Drosophila. 234 

 Briom, sugar beet, 340 

 " Broadbreeding " advocated, 334 



begun in Germery, 292 

 Hryonia, sex-inheritance, 100 

 Bryonia dioica, sex-inheritance, 212 

 Bryophyllum calycinum, hormones, 270 

 Bud mutations, 385 



in Boston fern, 315, 886 

 in cherry, 383 

 in citrus, 392 

 in roses, 311 

 long known, 366 

 progressive and digressive, 315 

 selection, 298, 385, 386 

 effective in Coleus, 390 

 in apples, 393 

 in citrus, 391 

 in horticulture, 391 

 in potato, 394 

 limitations of, 398 

 sports, 270 

 cause, 273 

 in apple, 393 

 in orange, 386 

 in potato, 394 

 occurrence, 272, 311, 386 

 variations, 298, 385, 391 

 Budd, seed and plant introduction, 299 

 Buder, Crattegomespili, 379 

 graft-hybrids, 374, 377 

 graft-hybrids list, 378 

 reciprocal grafting, 382 

 Buds, adventitious and chimeras, 374 

 Buff eye color in Drosophila, 156 

 Bull, Concord grape, 290 

 plant breeding, 437 

 tree fruits, 297 



Bumble bees, crossing beans, 318 

 Burbank, composite hybridization, 298 

 species crossing, 297 

 walnuts, 364, 365 

 Burea bursa-paetoris X B. heegeri, 137 



duplicate factors in, 136 

 Butter fat production in mother and daughters, 



458 

 records compared, 455 



Cabbage, disease-resistant strains, 418 

 Cacao, dimorphic branches, 275 

 Calycine flower in Nicotiana, 218 

 Canadian Seed Growers' Association, 301 

 Cannabis saliva, 270 

 Cantaloupe, 317 



disease-resistant, 415 

 Carbohydrates, specificity of, 266 

 Carleton, experimental error, 430 



grain rust, 413 



Marquis wheat, 294 



small grains, 296 



