320 



INDEX 



Breeding, cotton, 177 



cucurbits, 259 



flax, 158 



fruits, 266, 273, 278, 279 



Hays, progeny test, 111 



Hopkins, ear-to-row test, 111, 

 198 



keeping records in, 111 



maize, 196, 290 



radish, 250 



self-fertilized vegetables, 247 



small grains, 111 



soybeans, 148 



timothy, Cornell station, 210, 



211 

 at Svalof, 212 



wheat, 135, 137 

 Buckwheat, breeding, 108 



characters of, 107 



original home of, 107 



species, 107 



Bull, the Concord grape, 265 

 Burnett, oat selections, 131 

 Bushnell, squash, selfing in, 68 

 breeding, 260 



C 



Camerarius, on sexuality, 3 

 Caporn, inheritance, size characters 



oats, 96 



Carleton, origin of rice, 108 

 Carrier, increase of seed size due to 



crossing, 201 

 Check plots, correcting yields by, 53, 



55 



estimating heterogeneity by, 53 

 in obtaining probable errors, 55 

 Cherries, self-sterility in, 269 

 Citranges, 277 



Clover, pollination in, 207, 214 

 selection in, 292 

 species, 214 



Coe, mutations in velvet beans, 150 

 Collins, origin of maize, 182 



podded characters in maize, 189 

 varietal crosses in maize, 202, 



203 



Collins and Kempton, endosperm 

 characters in maize, 185 



Collins and Kempton, increase in 

 seed size due to a cross, 201 

 Competition in variety test, 63 



in rod row tests, 64 

 Correlations, morphological charac- 

 ters and lodging, small 

 grains, 127 



value of, 125 



Correns, endosperm characters of 

 maize, 185 



xenia in maize, 183 

 Cotton, chromosome number, 177 



cultivated species, 173 



disease resistance, 177, 178 



flower structure, 174, 175 



inheritance in, 176 



mutations in, 177 



natural crosses in, 38, 173 



origin of, 173 

 Cowpea, inheritance in, 143, 144 



Iron, a variety of, 131 



origin, 143 



resistance to disease, 144, 145 



selection and crossing results, 



145 



Crane, inheritance in tomato, 245 

 Crop improvement, value of, 14, 15 

 Crops, mode of reproduction of, 33, 



34 



Crosses, handling of, 116 

 Crossing, artificial, 68 



small grains, 69 



technic of, 74 

 Crossing-over, 12, 27 

 Cucumber, heterosis in, 257 



inheritance, 257 

 Cucurbit crosses, 7 



classification, 255 



Cytology, reduction division in 

 plants, 17, 18 



1) 



Darwin, heredity, 10 



natural selection, 9 



variability, 10 

 Date palm, sexuality, 3 

 De Candolle, origin and antiquity of 

 vegetables, 235 





