m 



40 BREEDING DBOTJGHT-BESISTANT EOEAGE PLANTS. 



Page. 



Wheat, tests of drought-resistant varieties k . 8 



grass. See Grass, wheat. 



Wheeler, W. A., plant breeding for drought resistance 9, 10, 13, 14, 15, 31 



Winterkilling. See Hardiness. 



Yield of alfalfa 14, 16-20 



millet 26-27, 28 



sorgo. 21-22 



196 



o 



