326 INDEX Ray, species, first use of term, 9 Replication, value of, 58 correct method of, 60 reducing probable error by, 59 Rice, important characters of, 108 inheritance summary, 109 natural crosses, 37 origin, 108 Rimpau, barley pollination, 36 oat crosses, 36 Riolle, radish inheritance, 249 Roberts, on early plant breeders, 5-8 Roguing, seed plots, 180 Rumker, von, xenia in rye, 106 inheritance in rye, 106 Russell <strong>and</strong> Morrison, natural crosses, soybean, 39 Rye, pollination, 39, 106 winter vs. spring, 106 xenia in, 106 Salaman, potato inheritance, 221 Salmon, blooming in wheat, 69 S Sargaret, cucurbits, classification, 254 cucurbits, crosses in, 7 Saunders, Marquis wheat, 136 wheat crosses, 36 Scott, evolution, 8 Seed, improved corn, 287 pure bred, 281 registered, 286, 293 what is good, 282 wilt resistant flax, 287 Selection, individual plant, 119, 128 in small grains, early workers, 118, 119 isolation of pure lines, 125 methods of, 114, 115 sorghum, sugar content, 179 Self-fertilization, in normally crossfertilized species, 45, 205 Setchell, tobacco sections, 159 Sexuality, Camerarius proves fact, 3 further proof of, 4 Shamel, tobacco breeding, 165 Shamel <strong>and</strong> Cobey, tobacco breeding, 166 Shamel <strong>and</strong> others, bud selection in fruits, 274 Shaw, self-fertilization in beet, 250 Shaw <strong>and</strong> Norton, inheritance in beans, 242 Shirreff, early selections, 118 Shull, self-fertilization in maize, 202, 205 Smith, selection for chemical content, maize, 193 Sorghum, breeding, 179 classification, 178 inheritance in, 178 origin of, 178 self-fertilization in, 38, 180 Soybeans, breeding, 148 characters of, 146 inheritance in, 147 natural crosses, 39 origin of, 146 Species, crosses, Fi, tobacco, 45 crosses, willow, 8 first use of term, 9 Spillman, cowpea inheritance, 143, 144 wheat, density of spike, 81 Spragg, M. A. C. Robust bean, 131 Spragg <strong>and</strong> Clark, Red Rock wheat, 128 Squash, breeding, 259 flower structure, 255 size inheritance, 258 Stakman <strong>and</strong> others, biologic forms of rust, 85 flax wilt resistance, 157 Stewart, bud selection in fruits, 275 tobacco breeding, 166 Stout, bud variations, 274, 276 Stuart, potato breeding, 223, 224, 226 Surface, oat inheritance, 92, 93 oat selections, 129 oat species crosses, 90, 94 Sutton, Brassica crosses, 251 self-sterility, fruits, 269 Swingle, citrus fruits, 277
INDEX 327 Variations, hybridization, 13 setting, 214 Variations, mutations, 21 Tammes, flax inheritance, 155, 156 new combination, 21 non-heritable, 20 flax species crosses, 153 Vegetables, cross-fertilized group. Thatcher, barley inheritance, 102 248 Thompstone, inheritance in rice, 109 origin <strong>and</strong> antiquity of, 235 natural crosses in rice, 37 self-fertilized group, 234 Timothy, breeding, 210 Velvet bean, breeding, 151 flower structure, 209 characters <strong>and</strong> inheritance, 149 variability in, 208 mutations in, 150 Tisdale, flax wilt, inheritance, 158 origin, 149 Tobacco, breeding, 140 Vilmorin, early selections, 119 classification in groups, 159 selection in beets, 250 color of flowers, inheritance, 161 wheat species crosses, 77 Fi crosses, vigor of, 42 Von Mons, selection in fruits, 264 mutations in, 167 DeVries, correlations, value of, 125 natural crosses in, 36 individual plant method of number of seeds per plant, 36 selection, 120 parthenogenesis in, 160 wheat, barley <strong>and</strong> oats pollination, 35 quantitative characters, inheritance, 162 xenia in maize, 183 Tolaas <strong>and</strong> Bisby, disease-free potatoes, 291 Tomato, characters of, 245 W Fi crosses, vigor of, 42, 43 Waite, self-sterility in plum, 269 inheritance, 245, 246 Waldron, alfalfa, natural crosses, 40 natural crosses, 39 pollination of, 216 Townsend, self-fertilization in sorghum, winter hardiness, 216 180 Waller, normal self-pollination in Trabut, oats, A. sterilis origin, 90 maize, 39 Tschermak, barley inheritance, 102 Watermelon, bean inheritance, 242 in, 258 Waugh, self-sterility in plum, 269 oats, natural crosses, 36 Webber, cotton inheritance, 177 oats, species crosses, 90 cotton, pea, inheritance, 238, 239 crosses, 38, 173 rye, wild rye, 106 pepper inheritance, 247 rye, winter timothy breeding, 210 vs. spring habit, 106 xenia in maize, 183 tomato, inheritance, 245 Webber <strong>and</strong> Orton, cowpea, disease vegetable, mass selection, 250 resistance, 145 wheat, species groups <strong>and</strong> Weigmann, early crosses, 5 crosses, 77, 78 Weissmann, constancy of germ U Ulrich, rye-pollination, 40 plasm, 10 Wellington, Fi tomato crosses, 42 heterosis <strong>and</strong> inheritance, cucumber, 257 V parthenogenesis in tobacco, 160 raspberry inheritance, 272 Valleau, sterility in strawberry, 270 Westgate <strong>and</strong> others, clover, seed
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AGRICULTURAL AND BIOLOGICAL PUBLICA
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s'g S 2 ! o s s
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COPYRIGHT, 1921, BY THE McGRAW-HiLL
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PREFACE Since the early development
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. Early CONTENTS CHAPTER I INTRODUC
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CONTENTS xiii PAGE Color of grain a
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CONTENTS XV PAGE Sorghum 178 Origin
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CONTENTS xvn CHAPTER XIX FARMERS' M
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2 BREEDING CROP PLANTS times by pri
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4 BREEDING CROP PLANTS "In the vege
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8 BREEDL\C CROP PLANTS by one of it
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10 BREEDING CROP PLANTS 1. Variabil
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12 BREEDING CROP PLANTS bud sports
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14 BREEDING CROP PLANTS who gives t
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* CHAPTER II PLANT GENETICS 1 Since
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18 BREEDING CROP PLANTS pair being
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20 BREEDING CROP PLANTS The Inherit
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22 BREEDING CROP PLANTS which are n
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24 BREEDING CROP PLANTS There is a
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26 BREEDING CROP PLANTS and Pr. let
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! 28 BREEDING CROP PLANTS The gener
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Average 42 BREEDING CROP PLANTS tob
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58 BREEDING CROP PLANTS TABLE XI. T
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72 BREEDING CROP PLANTS method (1),
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74 BREEDING CROP PLANTS flowers whi
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76 BREEDING CROP PLANTS Classificat
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82 BREEDING CROP PLANTS generation
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92 BREEDING CROP PLANTS development
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112 KREEDINd CHOP PLANTS variety te
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114 BREEDING CROP PLANTS Selection.
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116 BREEDING CROP PLANTS of selecti
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120 BREEDING CROP PLANTS Briefly, i
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122 BREEDING CROP PLANTS In the abo
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124 BREEDING CROP PLANTS correlatio
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126 BREEDING CROP PLANTS likewise s
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128 BREEDING CROP PLANTS WHEAT SELE
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130 BREEDING CROP PLANTS TABLE XXVI
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CHAPTER X SOME RESULTS OF CROSSING
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134 BREEDING CROP PLANTS A Wheat Cr
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136 BREEDING CROP PLANTS Among othe
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140 BREEDING CROP PLANTS to quality
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166 BREEDING CROP PLANTS variabilit
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168 BREEDING CROP PLANTS 1910 to 19
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190 BREEDING CROP PLANTS pure race
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192 BREEDING CROP PLANTS Studies of
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CHAPTER XVII BREEDING OF VEGETABLES
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236 BREEDING CROP PLANTS not known,
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238 BREEDING CROP PLANTS Le = long
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240 BREEDING CROP PLANTS TABLE LXI.
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242 BREEDING CROP PLANTS shell bean
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252 BREEDING CROP PLANTS kohl-rabi.
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254 BREEDING CROP PLANTS TABLE LXV.
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256 BREEDING CROP PLANTS nucleus of
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258 BREEDING CROP PLANTS These data
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260 BREEDING CROP PLANTS recommende
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274 BREEDING CROP PLANTS bud sports
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