Abstract
In the winter of 1948-49, wheat plants(Var.Norin No.50) were cultivated under the conditions of filling sand(3, 5, 10, 15 and 20cm thick) and removing soil(till the depth of 2 and 5cm) at different stages. Morphological modifications of wheat were following: (1) The number of tillers of sand filling plots decreased as compared with the untreated plots, and the length of plants of the former became longer than the latter. (2) On the contrary, the number of tillers under plots of soil removing increased sufficiently, and the length of plants became shorter and stunted.
