INDEX 
Macoun, apple breeding, 295 
Maize, 317 
aphis resistant hybrids, 410 
bud sports, 273 
centralized seed production, 361 
chromosome number, 57 
collecting stock seed, 341 
competitive action of factors for flinty and 
floury endosperm, 150 
complementary factors in, 140 
crossbreeding, 354 
crossed with teosinte, 296, 410 
crossing inbred strains, 354 
varieties, 356, 358, 360 
dominant mutations, 274 
double fertilization in, 151 
ear-to-row method of breeding, 327, 433 
economy of comparing yields, 356 
factors for protein and oil, 333 
grain, physiological characters, 333 
high and low ears, 329 
and low oil, 328 
and low protein, 328 
hybridization of, 344 
Illinois experiments, 327, 330, 331, 333 
immediate effect of crossing, 360 
inbreeding in, 325, 354, 356 
inheritance of starchy and sweet endosperm, 
79 
of purple and white aleurone, 81 
mass selection in, 292, 336 
method of comparing yields, 356 
of producing hybrid seed, 361 
multiple allelomorphs in, 159 
mutations in, 367 
naturally cross-fertilized, 257 
pure line concept and, 293 
purple sweet X white starchy, 84 
remnant system, 335 
réle of selection in breeding, 333 
selection in breeding, 325 
superior qualities in Fi, 359 
system of aleurone color factors in, 163 
tall and dwarf, 174 
use of F, seed, 356 
vigor in F, hybrids, 231, 233, 253 
water requirement, 402 
yield of inbred strains, 354 
Malva hybridized, 438 
mauritiana X M. sylvestris, 230 
Malvacez, variegation in, 381 
Mammals, sex-determination in, 536 
Man, color-blindness, 197 
defects in, 524 
disease immunity in, 528 
sex-determination-in, 538 
sex-inheritance, 196 
sex-ratios in, 540 
Manifold effects of factors, 133 
Marking individual animals, 602 
Marryat, Miss, Mirabilis jalapa, 148 
Marshall, F. H. A., castration effects, 549 
“Physiology of Reproduction,” 551 
sterility, 552 
663 
Marshall, F. R., Redfield theory, 483 
Mass selection, 260, 291 
in cotton, 292 
in fowls, 457 
in maize, 292, 336 
in small grains, 292 
usefulness, 340 
Material, plant breeding, 299 
Maternal impressions, 572 
Mathematical adequacy of Mendelism, 77 
Mathiola, hybridized, 438 
Miss Saunder’s factor system in, 166 
Matroclinous species hybrids, in Digitalis, 229 
in Gnothera, 229 
Mauz, species hybrids, 230 
Mayer, chimeras, 378 
McCann, studbook records, 466 
McCombie, breeder, 570 
Mean, calculation and significance, 40 
of an F2 population, 184 
Mechanism, segregation, 61, 274 
Medicago falcata, 296 
lupulina, 296 
media (falcata & sativa), 296 
sativa, 296 
Medlar-whitethorn chimera, 378, 379 
Meek, chromosomal dimensions, 264 
Melandrium, hybridized, 438 
Mendel, experiments with peas, 69, 77, 78, 144 
investigations, 1 
peas, 174 
principle of segregation, 104, 110 
re-discovery, 438-439 
segregation discovery, 68 
Mendelian, analysis of Qnothera phenomena, 
247 
of wheat-rye hybrids, 238 
characters, 71 
conceptions, modern, 242 
experiment, goodness of fit in, 101, 102 
explanation modified, 245 
of Antirrhinum cross, 222 
factor, 71 
for variegation, 273 
factors, affecting fertility, 554 
nature and expression of, 129 
heredity, 71 
inheritance, 57, 59, 188, 224, 333 
independent, 68 
interpretation of heredity, 67, 77 
of prepotency, 574 
“‘aws’’ modified and extended, 439 
principles, application of, 342 
establishment of, 85 
operation of, 70, 515 
principles and quantitative inheritance, 174 
problems, complexity, 100 
ratios, forces tending to disturb, 102 
methods of testing, 100 
peculiar, 132, 137, 139, 140, 141, 142 
terminology, 71 
theory of heredity, 7 
of sex, 196, 205, 544, 546 
Mendelism, cardinal feature of, 68 
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