322 



INDEX 



G 



Gaines, disease resistance in wheat, 



86 



oat crosses, 93 

 seed characters in wheat, 82 

 spike density in wheat, 81 

 Gametes, production in flowering 



plants, 17 



Garber, stem rust in oats, 95 

 Garber and Olson, stem characters 



of small grains, 127 

 Garner, tobacco mutations, 167 

 Garner and Allard, effect of length 

 of day on flowering, 169 

 Genetics, factor stability, 32 

 inheritance factors, 20 

 inheritance, two independently 



inherited factors, 23 

 linkage, 26 



method of studying, 16 

 size characters, 27 

 Germ plasm, constancy of, 10 

 Gilbert, potato characters, 223 

 Giltay, xenia in rye, 106 

 Goff , self-sterility in plum, 269 

 Goodspeed, parthenogenesis in 



tobacco, 160 



size inheritance in tobacco, 165 

 Goss, early pea crosses, 7 

 Graham, inheritance in sorghum, 



179 



pollination of sorghum, 38 

 Grape, early breeding, 265 

 inheritance in, 272 

 self-sterility in, 269 

 Grasses, pollination in, 41, 207 

 economic species, 207 

 selection in, 293 

 Griff ee, FI wheat crosses, 43 

 Groth, inheritance in tomato, 245 

 Guignard, double fertilization, 183 



H 



Hagedoorn, early wheat selections, 



119 

 Hallet, early selections in small 



grains, 118 

 Hansen, fruit breeding, 278 



Harlan, barley, natural crosses, 36 



classification of barley, 98 

 Harlan and Anthony, the barley 



awn, 104 

 Harlan and Hayes, barley species 



crosses, 99 

 Harland, cowpea, inheritance, 143, 



144 



natural crosses, 39 

 Harris, soil heterogeneity, 51 

 Harshberger, home of maize, 181 

 Hartley and others, varietal crosses 



of maize, 203 

 Hasselbring, pure lines in tobacco, 



166 



Hayes, maize, self-pollination, 39 

 pericarp color, maize, 188 

 pure-line selection, tobacco, 122, 



166 



size characters, 165 

 tobacco mutations, 167 

 Hayes and Arny, replication, 59 

 Hayes and Beinhart, tobacco muta- 

 tions, 167 

 Hayes and East, maize inheritance, 



185, 192 



maize, varietal crosses, 203 

 Hayes, East and Beinhart, size 

 characters, tobacco, 162, 

 165 

 Hayes and Garber, winter hardiness 



in wheat, 87, 138 

 high protein maize, 195 

 Hayes and Harlan, barley, spike 



density, 104 

 Hayes and Jones, FI tomato crosses, 



43 

 Hayes and Olson, FI varietal maize 



crosses, 203 

 Hayes and others, disease resistance 



in wheat, 85 

 sterility in wheat, 79 

 Hayes and Stakman, rust in timo- 

 thy, 213 



Hays, small grain breeding, 112 

 Head thrasher, small grains, 117 

 Heckel, mutations in potatoes, 220 

 Hector, inheritance in rice, 109 

 natural crosses in rice, 37 



