Ricerche sull'infrastruttura del coleottile di avena: I. — Il fascio vascolare in corso di differenziazione

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Abstract
STUDIES ON THE INFRASTRUCTURE OF THE OAT COLEOPTILE. I. - THE DEVELOPING XYLEM CELLS. — The writers are engaged with a research program dealing with the morphological changes effected in the cell infrastructure by growth substances. The problem, obviously, requires an intimate knowledge of cell infrastructure of all different tissues of the test used, the oat coleoptile in this case. With this first note, cell infrastructures of the xylem region of the bundle (parenchyma and tracheids) are described, limitedly to the portion 1 mm behind the coleoptile tip, where cell divisions are completely suppressed while cell elongation and differentiation are set on.

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