Biol. Stud. 2010: 4(1); 115–122 • DOI: https://doi.org/10.30970/sbi.0401.079

COMPARATIVE GYNOECIUM MORPHOLOGY IN STRATIOTES ALOIDES L. AND HYDROCHARIS MORSUS-RANAE L. (HYDROCHARITACEAE)

S. V. Izmestieva, A. V. Odintsova

Abstract


Comparative morphology and vascularisation of the gynoecium in Stratiotes aloides and Hydrocharis morsus-ranae hare been studied. The gynoecium is syncarpous, with synascidiate, symplicate, hemisymplicate and asymplicate zones, first three zones are fertile. In Hydrocharis, the highest zone in the ovary is symplicate zone, in Stratiotes – hemisymplicate zone. Placentation is laminar in Hydrocharis and laminar two-rowed and parietal in Stratiotes. Style-like part of the pistil is composed of fused (Hydrocharis) or partially fused (Stratiotes) carpels. Elongated carpel margins in the  hemisymplicate zone of the gynoecium can provide a compitum existence.

Keywords: Stratiotes aloides, Hydrocharis morsus-ranae, morphology, gynoe­cium, structural zones, placentation, compitum.

References


1. Барыкина Р.П., Веселова Т.Д., Девятов А.Г. и др. Справочник по ботанической микротехнике. Основы и методы. М.: Изд-во Москов. ун-та, 2004. 287 с.

2. Волгин С.А., Тихомиров В.Н. О структурных типах моноциклического синкарпного гинецея покрытосеменных. Бюлл. МОИП. Отд. биол, 1980; 85(6): 63-74.

3. Eichler A.W. Blüthendiagramme. 1 Teil. Leipzig: Engelmann, 1875. 348 S.

4. Kaul R.B. Floral morphology and phylogeny in the Hydroсharitaceae. Phytomorphology, 1968; 18: 13-35.

5. Leinfellner W. Der Bauplan des synkarpen Gynözeums. Österr. Bot. Z, 1950; 97: 403-436.
https://doi.org/10.1007/BF01763317

6. Remizova M., Sokoloff D., Rudall P.J. Evolution of the monocot gynoecium: evidence from comparative morphology and development in Tofieldia, Japonolirion, Petrosavia and Narthecium. Pl. Syst. Evol, 2006; 258: 183-209.
https://doi.org/10.1007/s00606-005-0397-3

7. Rudall P.J., Bateman R.M. Roles of synorganisation, zygomorphy and heterotopy in floral evolution: the gynostemium and labellum of orchids and other lilioid monocots. Biol. Rev, 2002; 77: 403-441.
https://doi.org/10.1017/S1464793102005936
PMid:12227521

8. Salisbury E.J. Floral construction in the Helobiales. Ann. Bot, 1926; 40(158): 419-445.
https://doi.org/10.1093/oxfordjournals.aob.a090027

9. Volgin S.A., Al Taleb M. Gafässbündelanatomie der Blüte von Calandrinia grandiflora Lindl. und Calandrinia compressa Schrad. und vergleichende Blütenmorphologie der Portulaccaceae. Feddes Repert, 1998; 109(1-2): 75-88.
https://doi.org/10.1002/fedr.4921090113




DOI: http://dx.doi.org/10.30970/sbi.0401.079

Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 Studia biologica