CYTOGENETIC STUDIES IN THE GENUS TRIBOLIUM (POACEAE, DANTHONIEAE) .2.A REPORT ON EMBRYO SAC DEVELOPMENT, WITH SPECIAL REFERENCE TO THE OCCURRENCE OF APOMIXIS IN DIPLOID SPECIMENS

Authors
VISSER NC SPIES JJ
Citation
Nc. Visser et Jj. Spies, CYTOGENETIC STUDIES IN THE GENUS TRIBOLIUM (POACEAE, DANTHONIEAE) .2.A REPORT ON EMBRYO SAC DEVELOPMENT, WITH SPECIAL REFERENCE TO THE OCCURRENCE OF APOMIXIS IN DIPLOID SPECIMENS, South African journal of botany, 60(1), 1994, pp. 22-26
Citations number
NO
Categorie Soggetti
Plant Sciences
Journal title
South African journal of botany → ACNP
ISSN journal
02546299
Volume
60
Issue
1
Year of publication
1994
Pages
22 - 26
Database
ISI
SICI code
0254-6299(1994)60:1<22:CSITGT>2.0.ZU;2-0
Abstract
The genus Tribolium Desv. forms part of the tribe Danthonieae and is e ndemic to southern Africa. This genus comprises twelve species and is subdivided into three sections, namely Tribolium, Acutiflorae and Unio lae. This is the first study on embryo sac development in this genus. The ovaries are monolocular with a single anatropous ovule. The nucell us is uniseriate and is protected by a multicellular integument. Polyg onum-type embryo sac development is present in all species. Additional to the development of reduced embryo sacs, unreduced embryo sac devel opment of the Hieracium-type has been observed in diploid specimens of T. echinatum (Thunb.) Desv., T. uniolae (L. f.) Renv. and T. utriculo sum (Nees) Renv.