Aberrant Ovules in Angiosperms: A Review of Selected Examples and New Observations on Ornithogalum caudatum (Liliaceae)

Authors

Varien R. Tilton, Iowa State UniversityFollow

Document Type

Research

Keywords

Aberrant ovules, binucellate ovule, multiple megagametophytes

Abstract

While studying the events of megasporogenesis and megagametogenesis in Ornithogalum caudatum Ait., two ovules were observed which were quite different from the others. These two ovules were from separate ovaries, but the aberrant condition was the same in each ovule. In both cases, the ovule consisted of a single set of integuments enclosing two side-by-side nucelli each with its own developing megaspore. Such multiple-megagametophyte ovules may represent a now-defunct developmental pathway from the early evolutionary history of angiosperm ovules.

Publication Date

March 1980

Journal Title

Proceedings of the Iowa Academy of Science

Volume

87

Issue

1

First Page

23

Last Page

28

Copyright

©1980 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Tilton, Varien R. (1980) "Aberrant Ovules in Angiosperms: A Review of Selected Examples and New Observations on Ornithogalum caudatum (Liliaceae)," Proceedings of the Iowa Academy of Science, 87(1), 23-28.
Available at: https://scholarworks.uni.edu/pias/vol87/iss1/6