A COMPARATIVE FLORAL ONTOGENIC STUDY BETWEEN ADOXA-MOSCHATELLINA AND SAMBUCUS-EBULUS

Authors
Citation
P. Roels et E. Smets, A COMPARATIVE FLORAL ONTOGENIC STUDY BETWEEN ADOXA-MOSCHATELLINA AND SAMBUCUS-EBULUS, Belgian journal of botany, 127(2), 1994, pp. 157-170
Citations number
NO
Categorie Soggetti
Plant Sciences
Journal title
ISSN journal
07784031
Volume
127
Issue
2
Year of publication
1994
Pages
157 - 170
Database
ISI
SICI code
0778-4031(1994)127:2<157:ACFOSB>2.0.ZU;2-4
Abstract
In order to clarify the possible relationship between Adoxa and Sambuc us, we studied the floral ontogeny of Adoxa moschatellina L. and Sambu cus ebulus L. The following ontogenetical differences could be observe d between both species: (1) a retardation in the development of the ab axial side of the lateral flowers of A. moschatellina; (2) the initiat ion of the corolla lobes of S. ebulus upon a ring-like extension and n ot directly on a flattened floral apex as in A. moschatellina; (3) the formation of a depression in the floral apex as the first step of the gynoecial development in S. ebulus, which was not observed in A. mosc hatellina. These differences are interpreted as variations of a same b asic developmental pattern. Therefore, it is concluded that Adoxa evol ved from an ancestor shared with Sambucus (or another Dipsacalean taxo n). However, the possibility that the observed differences are the ref lection of two different developmental patterns, is not completely rul ed out.