Hayes and Garber - Cucurbit Breeding

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188 BREEDING CROP PLANTS to a single factor. For example, the color in cob and pericarp is often correlated in inheritance. Emerson (1911) has found a case in which the factor for color in the cob behaves as an allelomorph of the factor for color in the pericarp. In the illustration given in Table XL Ri represents the factor for cob color and #2 the factor for pericarp color. TABLE XL. SUMMARY OF A CROSS IN WHICH A FACTOR FOR COB COLOR BEHAVED AS AN ALLELOMORPH OF A FACTOR FOR COLOR OF PERICARP Parents
MAIZE BREEDING 189 in the factor V, for variegated, concluded: to S for self-color. Emerson "That these results favor the idea that single allelomorphic factors, rather than two or more closely linked factors, are responsible for the color pattern of both glumes and pericarp." The concluding paragraph of Emerson's 1917 paper is directly in line with the ideas which have been developed throughout this book. With most plant-breeding material of our farm crops, there is no evidence for basing a system of plant improvement upon mutations, as these are infrequent. With anthocyan color characters of corn, inherited changes sometimes occur more frequently and such mutations become of selection value. This does not invalidate the pure-line conception for the large number of cases where factor stability is the rule. To quote from Emerson: "The existence of the series of at least nine or ten multiple allelomorphs to which variegation belongs, indicates that a factor for pericarp color has mutated several times. Some of the factors for this series have not been observed to mutate, while others have mutated rarely and still others many times. In fact, the principal difference between certain of the factors is thought to lie in their relative frequencies of mutation." Podded Condition. The podded character was thought by East and Hayes (1911) to be a simple dominant and to be dependent on a single factor for its development. Extracted recessives bred true to the podless condition. Collins (1917) has presented evidence which indicates that the ordinary type of tunicate maize represents a case of imperfect dominance and that it, like the Andalusian fowls, is unfixable and related to the heterozygous condition. Selfed seeds of typical podded ears produced three types of plants: (1) like the parent; (2) with normal ears; (3) a plant which does not produce seed in the lateral inflorescences but in perfect flowers in the tassels. Jones and Gallastegui (1919) obtained similar results. A starchy tunicate ear was used as the female parent and was pollinated with pollen from a non-tunicate sweet race. The linkage between the starchy and tunicate factors was quite close, only 8.3 per cent. of . crossing-over occurring. Auricle and Ligule. Emerson has shown that the absence of auricle and ligule is a recessive character. In a cross between a
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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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6 BREEDING CROP PLANTS more attenti
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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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30 BREEDING CROP PLANTS intermediat
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32 BREEDING CROP PLANTS a conceptio
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34 BREEDING CROP PLANT* Group 4. Ve
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36 BREEDING CROP PLANTS crosses. Sm
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38 BREEDING CROP PLANTS mas protrud
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40 BREEDING CROP PLANTS between the
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Average 42 BREEDING CROP PLANTS tob
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44 BREEDING CROP PLANTS same for th
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46 BREEDING CROP PLANTS order to il
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48 BREEDING CROP PLANTS existence i
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50 BREEDING CROP PLANTS basis of do
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52 BREEDING CROP PLANTS certain con
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54 BREEDING CROP PLANTS for the pur
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56 BREEDING CROP PLANTS four plots.
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58 BREEDING CROP PLANTS TABLE XI. T
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60 BREEDING CROP PLANTS series then
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62 BREEDING CROP PLANTS central row
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64 BREEDING CROP PLANTS nating rows
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66 BREEDING CROP PLANTS The groupin
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68 BREEDING CROP PLANTS Two men may
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70 BREEDING CROP PLANTS A common pr
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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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78 BREEDING CROP PLANTS crosses bet
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80 BREEDING CROP PLANTS and those f
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82 BREEDING CROP PLANTS generation
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84 BREEDING CROP PLANTS nuclei, the
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86 BREEDING CROP PLANTS crosses bet
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88 BREEDING CROP PLANTS The Howards
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90 BREEDING CROP PLANTS CC. Lemma w
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92 BREEDING CROP PLANTS development
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94 BREEDING CROP PLANTS grains on h
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96 BREEDING CROP PLANTS susceptibil
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98 BREEDING CROP PLANTS gous forms
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100 BREEDING CROP PLANTS was though
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102 BREEDING CROP PLANTS mediates b
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104 BREEDING CROP PLANTS crosses ha
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106 BREEDING CROP PLANTS Wild rye,
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108 BREEDING CROP PLANTS same plant
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110 BREEDING CROP PLANTS Time of cu
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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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CHAPTER IX SOME RESULTS OF SELECTIO
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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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Page 164 and 165: 140 BREEDING CROP PLANTS to quality
Page 166 and 167: 142 BREEDING CROP PLANTS index is o
Page 168 and 169: 144 BREEDING CROP PLANTS Factor sys
Page 170 and 171: 146 BREEDING CROP PLANTS Later more
Page 172 and 173: 148 BREEDING CROP PLANTS Parents Co
Page 174 and 175: 150 BREEDING CROP PLANTS The Lyon b
Page 176 and 177: 152 BREEDING CROP PLANTS isolated t
Page 178 and 179: 154 BREEDING CROP PLANTS 4 FIG, 34.
Page 180 and 181: 156 BREEDING CROP PLANTS same resul
Page 182 and 183: 158 BREEDING CROP PLANTS grown for
Page 184 and 185: 160 BREEDING CROP PLANTS longer tha
Page 186 and 187: 162 BREEDING CROP PLANTS with the p
Page 188 and 189: 164 BREEDING CROP PLANTS "4. When a
Page 190 and 191: 166 BREEDING CROP PLANTS variabilit
Page 192 and 193: 168 BREEDING CROP PLANTS 1910 to 19
Page 194 and 195: 170 BREEDING CROP PLANTS
Page 196 and 197: 172 BREEDING CROP PLANTS normal var
Page 198 and 199: 174 BREEDING CROP PLANTS branching
Page 200 and 201: 176 BREEDING CROP PLANTS hybrid seg
Page 202 and 203: 178 BREEDING CROP PLANT* which are
Page 204 and 205: 180 BREEDING CROP PLANTS the settin
Page 206 and 207: 182 BREEDING CROP PLANTS organs. Th
Page 208 and 209: 184 BREEDING CROP PLANTS Xenia may
Page 210 and 211: 186 BREEDING CROP PLANTS manner as
Page 214 and 215: 190 BREEDING CROP PLANTS pure race
Page 216 and 217: 192 BREEDING CROP PLANTS Studies of
Page 218 and 219: 194 BREEDING CROP PLANTS B. RESULT
Page 220 and 221: 196 BREEDING CROP PLANTS corn and g
Page 222 and 223: 198 BREEDING CROP PLANTS TABLE XLV.
Page 224 and 225: 200 BREEDING CROP PLANTS system of
Page 226 and 227: 202 BREEDING CROP PLANTS Kempton we
Page 228 and 229: 204 BREEDING CROP PLANTS general ru
Page 230 and 231: 206 BREEDING CHOP PLANTS abnormalit
Page 232 and 233: 208 BREEDING CROP PLANTS sis), Cana
Page 234 and 235: 210 BREEDING CROP PLANTS plant sele
Page 236 and 237: 212 BREEDING CROP PLANTS The practi
Page 238 and 239: 214 BREEDING CROP PLANTS TABLE LIII
Page 240 and 241: 216 BREEDING CROP PLANTS belong to
Page 242 and 243: 218 BREEDING CROP PLANTS correlatio
Page 244 and 245: 220 BREEDING CROP PLANTS approached
Page 246 and 247: 222 BREEDING CROP PLANTS P. Segrega
Page 248 and 249: 224 BREEDING CROP PLANTS 1. The het
Page 250 and 251: 226 BREEDING CROP PLANTS TABLE LV.
Page 252 and 253: 228 BREEDING CROP PLANTS These earl
Page 254 and 255: 230 BREEDING CROP PLANTS For the 16
Page 256 and 257: 232 BREEDING CROP PLANTS variety ca
Page 258 and 259: CHAPTER XVII BREEDING OF VEGETABLES
Page 260 and 261: 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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244 BREEDING CROP PLANTS data on th
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246 BREEDING CROP PLANTS TABLE LXII
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248 BREEDING CROP PLANTS need not b
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250 BREEDING CROP PLANTS radish pla
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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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262 BREEDING CROP PLANTS varieties
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264 BREEDING CROP PLANTS TABLE LXVI
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266 BREEDING CROP PLANTS probably a
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268 BREEDING CROP PLANTS condition
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270 BREEDING CROP PLANTS very notic
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272 BREEDING CROP PLANTS these vari
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274 BREEDING CROP PLANTS bud sports
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The 276 BREEDING CROP PLANTS Stewar
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278 BREEDING CROP PLANTS made and 4
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280 BREEDING CROP PLANTS 1. A knowl
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282 BREEDING CROP PLANTS WHAT IS GO
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284 BREEDING CROP PLANTS METHODS OF
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286 BREEDING CROP PLANTS The seed p
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288 BREEDING CROP PLANTS report of
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290 BREEDING CROP PLANTS 5. Give sp
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292 BREEDING CROP PLANTS First Year
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DEFINITIONS 1 Acquired Character. A
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296 BREEDING CROP PLANTS Heredity.
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298 BREEDING CROP PLANTS Replicatio
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300 BREEDING CROP PLANTS BALLS, W.
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302 BREEDING CROP PLANTS CUMMINGS,
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304 BREEDING CROP PLANTS FRANDSEN,
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306 BREEDING CROP PLANTS HARRIS, J.
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308 BREEDING CROP PLANTS 1912. On t
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310 BREEDING CROP PLANTS LEAKE H. M
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312 BREEDING CROP PLANTS NILSSON-EH
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314 BREEDING CROP PLANTS RUSSELL, H
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316 BREEDING CROP PLANTS 1915. Die
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318 BREEDING CROP. PLANTS 1918. Inh
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320 INDEX Breeding, cotton, 177 cuc
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322 INDEX ( iaincs, disease resista
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324 INDEX Le Couteur, selection, sm
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326 INDEX Ray, species, first use o
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328 INDEX Wheat, artificial crossin
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Hayes and Garber - Cucurbit Breeding

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