Comparison of style length and reproduction success in Ficus of different breeding systems.

Détails

ID Serval
serval:BIB_316AD64F3D20
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Comparison of style length and reproduction success in Ficus of different breeding systems.
Périodique
Chinese Journal of Plant Ecology
Auteur(s)
Ma W.J., Zhang F.P., Peng Y.Q., Yang D.R.
ISSN
1005-264X
Statut éditorial
Publié
Date de publication
2009
Volume
33
Numéro
5
Pages
911-918
Langue
chinois
Notes
avec abstract en anglais
Résumé
Aims Figs and fig wasps are classical materials for research on plant-animal coevolution. There are both monoecious and dioecious figs. The evolutionary mechanism of Ficus has attracted many biologists. Most recently, Chen (2005) deduced that Ficus evolved from monoecious to dioecious, based on comparison of style distribution, pollinators' ovipositor length, and reproduction success in monoecious and dioecious figs. Our objective was to test the duduction and further study Ficus evolution.
Methods We collected figs in the female floral phase and measured the length of styles and pollinators' ovipositors in both monoecious figs and dioecious figs using dissecting microscopy. Figs in the male florets phase were also collected. We counted (i) seeds, galls, bladders, and unparasitized ovaries for monoecious figs, (ii) galls, bladders, and unparasitized ovaries for dioecious male figs, and (iii) seeds and unparasitized ovaries for female figs.
Important findings Ovipositor length was significantly longer, and the coefficient of variation (CV) of style length was higher in the two monoecious figs than in dioecious figs. Style length had unimodal distributions in the two monoecious figs, and their CVs were higher than pollinators' ovipositor length CVs. The style length had biomodal distributions in the two dioecious fig species, and the CVs of style length were also higher than those of the ovipositor length. Monoecious figs were more effective in producing galls, based on the proportions of ovaries that pollinators' ovipositors could reach, but dioecious figs were more effective in producing seeds. Therefore, the deduction of Chen (2005) is not completely correct, and additional research is needed to resolve the Ficus evolution question.
Mots-clé
Ficus in different breeding system, style distribution, ovipositor, proportions of seeds and galls, reproduction success
Création de la notice
23/06/2015 23:02
Dernière modification de la notice
20/08/2019 14:16
Données d'usage