Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This 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

A. Chiusoli
Rivista di ortoflorofrutticoltura italiana
Vol. 45, No. 1 (GENNAIO-FEBBRAIO 1961), pp. 54-65
Stable URL: http://www.jstor.org/stable/42873706
Page Count: 12
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
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
Preview not available

Abstract

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.

Page Thumbnails

  • Thumbnail: Page 
[54]
    [54]
  • Thumbnail: Page 
55
    55
  • Thumbnail: Page 
56
    56
  • Thumbnail: Page 
57
    57
  • Thumbnail: Page 
58
    58
  • Thumbnail: Page 
59
    59
  • Thumbnail: Page 
60
    60
  • Thumbnail: Page 
61
    61
  • Thumbnail: Page 
62
    62
  • Thumbnail: Page 
63
    63
  • Thumbnail: Page 
64
    64
  • Thumbnail: Page 
65
    65