Faculty of Agriculture, Alexandra University, Egypt.
The growth physiology of dasheen was investigated in the field. American dasheen had a greater number of roots than the Egyptian. The number of roots of plants grown from the apical-piece was more than that of those from the corm-piece.
The number of leaves of the apical-piece plants and the corm-piece was found to be nearly the same, but total weight of leaves of the former was much more than that of the latter.
The N. A. R. was greater in the American than the Egyptian; it decreased through the growing period. No difference between apical-piece and corm-piece was found. The E. G. R. was greater in corm-piece than in the apical piece. R. G. R. decreased during the growth period. This was due to the progressive decrease in the proportion of leaves to the total plants. The change in R. L. G. R. between treatments and its decline with time was quite similar to the changes of the R. G. R.
