Studies on the, Comparative Physiology of Chara Australis 1. Growth Pattern and Gross Cytology of the Internodal Oell

Authors:
  • MMMarie J Peebles Fv Mercer
    Marie J Peebles Fv Mercer
  • TCTc Chambers
    Tc Chambers
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Abstract
The growth of the internodal cell and its parts appears to be allometric. Two growth phases are recognized, an exponential phase in the young cells followed by a linear phase during which the internode expands by up to 200 mm in length. In the exponential phase the cytoplasm to vacuole ratio declines from a very high value to about 0·04--0·06 and then remains constant throughout the linear phase. In the linear phase the structure of the protoplast, at the light.microscope level, is similar for all cells; a unit volume of the protoplast appears similar in cells from 10 to 200 rum in length.