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Titolo:
Floral trait variation in four Cyclamen (Primulaceae) species
Autore:
Affre, L; Thompson, JD;
Indirizzi:
CNRS, CEFE, F-34293 Montpellier 5, France CNRS Montpellier France 5CNRS, CEFE, F-34293 Montpellier 5, France
Titolo Testata:
PLANT SYSTEMATICS AND EVOLUTION
fascicolo: 3-4, volume: 212, anno: 1998,
pagine: 279 - 293
SICI:
0378-2697(1998)212:3-4<279:FTVIFC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
POPULATION GENETIC-STRUCTURE; FLOWERING PLANTS; BREEDING SYSTEMS; BUZZ-POLLINATION; SEX ALLOCATION; POLLEN; ISLAND; RESOURCES; BIOLOGY;
Keywords:
Primulaceae; Cyclamen; buzz-pollination; floral biology; inbreeding coefficients; Mediterranean islands; pollen/ovule ratio;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Affre, L Univ Sci, Inst Bot, Chantemerle 18, CH-2007 Neuchatel, Switzerland Univ Sci Chantemerle 18 Neuchatel Switzerland CH-2007 witzerland
Citazione:
L. Affre e J.D. Thompson, "Floral trait variation in four Cyclamen (Primulaceae) species", PLANT SYS E, 212(3-4), 1998, pp. 279-293

Abstract

The purpose of this study is to examine floral trait variation between four Cyclamen species that show variation in their ability to reproduce in theabsence of pollinators and in levels of inbreeding. Pollen and ovule production, pollen/ovule ratio, pollen volume, petal length and width, diameter of the corolla mouth, pistil and stamen length, and stigma-anther separation varied significantly between the four study species. Flower, pollen and ovule production, pollen volume and corolla size were generally highest in C. hederifolium, the species with the lowest level of inbreeding (mean F-is = 0.329), intermediate in both species with relatively high levels of pollinator-mediated inbreeding, C. repandum (mean F-is=0.658) and C. creticum (mean F-is=0.748), and lowest in the highly inbred C. balearicum (mean F-is =0.930). The two species with the most different inbreeding coefficients, C. hederifolium and C. balearicum, had lower pollen-ovule ratios and shorterlongevities of stigma receptivity and pollen viability than C. creticum and C. repandum. These patterns of variation in floral traits are discussed in relation to the relatedness, pollination ecology and levels of inbreedingof the four species.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:56:50