You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
LE BASI ISTOLOGICHE DEGLI EFFETTI DELLA INVERTITA POLARITÀ DI ANELLI DI CORTECCIA SULLO SVILUPPO DEGLI ALBERI IN VIVAIO
Rivista di ortoflorofrutticoltura italiana
Vol. 45, No. 1 (GENNAIO-FEBBRAIO 1961), pp. 54-65
Published by: Dipartimento Di Scienze Delle Produzioni Vegetali, Del Suolo E Dell'Ambiente Agroforestale – DiPSA – University of Florence
Stable URL: http://www.jstor.org/stable/42873706
Page Count: 12
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
The A. refers about some preliminary investigations on the behaviour of oneyear old pear trees: A)-grafted with inverted rings of their own bark; B)-grafted with normally orientated rings, and C)-without ring grafts. Any significant difference has result between B)- and C)- groups in relation to the trees development, but highly significant differences have been found between A)- and B)- so as between A)- and C)- groups of trees. Histological investigations have shown that factors involved in the dwarfing effect depend upon the abnormal structure of the new Dhloem and the new xylem formed underneath the bark rings. The method of origin of those abnormal tissues structures is discussed in relation to the inverted « polarity » effects on the meristematic activity and on the differentiated tissues organisation.
Rivista di ortoflorofrutticoltura italiana © 1961 Dipartimento Di Scienze Delle Produzioni Vegetali, Del Suolo E Dell'Ambiente Agroforestale – DiPSA – University of Florence