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.

Endosperm and Perisperm of Coffee with Notes on the Morphology of the Ovule and Seed Development

William G. Houk
American Journal of Botany
Vol. 25, No. 1 (Jan., 1938), pp. 56-61
Stable URL: http://www.jstor.org/stable/2436631
Page Count: 6
  • Read Online (Free)
  • Download ($12.00)
  • 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.
Endosperm and Perisperm of Coffee with Notes on the Morphology of the Ovule and Seed Development
Preview not available

Abstract

The ovule of Coffea is accompanied by an extensively developed obturator. There appears to be no distinction between the tissues of the nucellus and those of the integument, the two being intimately fused. Endosperm production is scanty, and the few cells produced are soon crushed by the developing embryo. As a rule, walls are laid down immediately after the division of the endosperm nucleus, but sometimes wall formation is delayed for a time, or perhaps in some instances is omitted. The mass of tissue around the embryo is perisperm and thus belongs to the parental generation-a point of great importance in breeding work. The embryo is of the undifferentiated type, consisting of only a mass of cells until about the fifth month after fertilization.

Page Thumbnails

  • Thumbnail: Page 
56
    56
  • Thumbnail: Page 
57
    57
  • Thumbnail: Page 
58
    58
  • Thumbnail: Page 
59
    59
  • Thumbnail: Page 
60
    60
  • Thumbnail: Page 
61
    61