Hayes and Garber - Cucurbit Breeding

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212 BREEDING CROP PLANTS The practical results which have been attained by this method of breeding are brought out in Table LI, also taken from Webber et al. TABLE LI. SUMMARY, SHOWING YIELD OF FIELD-DRY HAY Yield in pounds per acre 1910 1911 Average yield of 17 new varieties Average yield of 7 checks Actual average increase 7,451 6,600 851 7,153 4,091 3,062 FIG. 51. View of vegetatively propagated row plots of timothy. Each plot is propagated from a single, original plant. Note that the two central plots are comparatively late in maturity; also note differences between these two strains, one having erect culms and heads, the other having somewhat spreading culms and long loose heads. (Courtesy of Piper.) The season of 1911 was particularly unfavorable for the growth of timothy. The new varieties gave a greater increase that year than in the preceding and more favorable one. Webber et al attribute this difference partly to the rust resistance of the new strains. The method of breeding timothy at Svalof as reported by Witte (1919) is not essentially different from that practiced at
GRASSES, CLOVER, AND ALFALFA 213 Cornell. Individual plant selections are vegetatively propagated in plots isolated as much as possible. Seeds produced by the better clones are planted in varietal plots for comparison. The best commercial varieties are also grown for comparison. When a new variety proves superior and has practical uniformity, it is increased and distributed on a large scale. A comparison of ordinary timothy and two improved forms distributed by the Svalof Station is shown in Table LII (Witte, 1919). TABLE LII. YIELD OF DIFFERENT VARIETIES OF TIMOTHY IN TRIALS AT SVALOF, 1909-1918 Variety
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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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138 BREEDING CROP PLANTS some of th
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140 BREEDING CROP PLANTS to quality
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142 BREEDING CROP PLANTS index is o
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144 BREEDING CROP PLANTS Factor sys
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146 BREEDING CROP PLANTS Later more
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148 BREEDING CROP PLANTS Parents Co
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150 BREEDING CROP PLANTS The Lyon b
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152 BREEDING CROP PLANTS isolated t
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154 BREEDING CROP PLANTS 4 FIG, 34.
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156 BREEDING CROP PLANTS same resul
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158 BREEDING CROP PLANTS grown for
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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 212 and 213: 188 BREEDING CROP PLANTS to a singl
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 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,
Page 262 and 263: 238 BREEDING CROP PLANTS Le = long
Page 264 and 265: 240 BREEDING CROP PLANTS TABLE LXI.
Page 266 and 267: 242 BREEDING CROP PLANTS shell bean
Page 268 and 269: 244 BREEDING CROP PLANTS data on th
Page 270 and 271: 246 BREEDING CROP PLANTS TABLE LXII
Page 272 and 273: 248 BREEDING CROP PLANTS need not b
Page 274 and 275: 250 BREEDING CROP PLANTS radish pla
Page 276 and 277: 252 BREEDING CROP PLANTS kohl-rabi.
Page 278 and 279: 254 BREEDING CROP PLANTS TABLE LXV.
Page 280 and 281: 256 BREEDING CROP PLANTS nucleus of
Page 282 and 283: 258 BREEDING CROP PLANTS These data
Page 284 and 285: 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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