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.

Viburnales: Cytological Features and a New Circumscription

Ana Maria Benko-Iseppon and Wilfried Morawetz
Taxon
Vol. 49, No. 1 (Feb., 2000), pp. 5-16
DOI: 10.2307/1223927
Stable URL: http://www.jstor.org/stable/1223927
Page Count: 12
  • Read Online (Free)
  • Download ($14.00)
  • 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.
Viburnales: Cytological Features and a New Circumscription
Preview not available

Abstract

Cytological studies carried out in 98 species (22 genera out of eight families: Caprifoliaceae, Sambucaceae, Viburnaceae, Adoxaceae, Valerianaceae, Dipsacaceae, Morinaceae, and Calyceraceae) of the Dipsacales s.l. and the eventually related families Cornaceae, and Hydrangeaceae point to a very close relationship between the Viburnaceae, Sambucaceae and Adoxaceae, corroborating the inclusion of these families into an order different from the Dipsacales, namely the Viburnales. Many cytological features shared by these families differ strongly from the Dipsacales s.str., especially (1) chromosome size and morphology, (2) the presence of cold induced chromosome regions (CIRs), (3) interphase nuclear structure, and (4) chromosome condensing behaviour at prophase. Cornaceae and Hydrangeaceae present similar interphase nuclei, but differ from the Viburnales by other karyomorphological characters. The results are discussed with respect to previous morphological, embryological, and molecular findings.

Page Thumbnails

  • Thumbnail: Page 
5
    5
  • Thumbnail: Page 
6
    6
  • Thumbnail: Page 
7
    7
  • Thumbnail: Page 
8
    8
  • Thumbnail: Page 
9
    9
  • Thumbnail: Page 
10
    10
  • Thumbnail: Page 
11
    11
  • Thumbnail: Page 
12
    12
  • Thumbnail: Page 
13
    13
  • Thumbnail: Page 
14
    14
  • Thumbnail: Page 
15
    15
  • Thumbnail: Page 
16
    16