Abstract
Several investigators have already studied the manner in which the growth of roots is affected when the shoots are removed. Kny concluded (1, p. 279) that in young seedlings of Vicia Faba and Zea Mays the growth in length of the main roots and the increase in weight of the whole root-system were altered very little, if at all, by the removal of the shoot. But Townsend (6, p. 515) found that in seedlings of the same species removal of the shoot distinctly accelerated the growth in length of the root, though not until after a preliminary period of 1 or 2 days, during which the growth of the root was unaltered or slightly retarded. His results certainly appear more convincing than those of Kny.
Published Version
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