Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system?

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system? / NIELSEN, LENE ROSTGAARD; SIEGISMUND, HANS R.; PHILIPP, MARIANNE.

In: Botanical Journal of the Linnean Society, Vol. 142, No. 1, 01.05.2003, p. 93-101.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

NIELSEN, LENEROSTGAARD, SIEGISMUND, HANSR & PHILIPP, MARIANNE 2003, 'Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system?', Botanical Journal of the Linnean Society, vol. 142, no. 1, pp. 93-101. https://doi.org/10.1046/j.1095-8339.2003.00168.x

APA

NIELSEN, LENE. ROSTGAARD., SIEGISMUND, HANS. R., & PHILIPP, MARIANNE. (2003). Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system? Botanical Journal of the Linnean Society, 142(1), 93-101. https://doi.org/10.1046/j.1095-8339.2003.00168.x

Vancouver

NIELSEN LENEROSTGAARD, SIEGISMUND HANSR, PHILIPP MARIANNE. Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system? Botanical Journal of the Linnean Society. 2003 May 1;142(1):93-101. https://doi.org/10.1046/j.1095-8339.2003.00168.x

Author

NIELSEN, LENE ROSTGAARD ; SIEGISMUND, HANS R. ; PHILIPP, MARIANNE. / Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system?. In: Botanical Journal of the Linnean Society. 2003 ; Vol. 142, No. 1. pp. 93-101.

Bibtex

@article{13df93f5d80b4c97b8e9d28259adce8c,
title = "Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Gal{\'a}pagos: remnants of a self-incompatibility system?",
abstract = "Different pollination treatments of capitula were used to examine the breeding system of individuals of the tetraploid endemic species Scalesia affinis from the Gal{\'a}pagos Islands. All types of crossings resulted in approximately 35 achenes per capitulum, but in actively and passively self-pollinated capitula these were mostly without embryos. Among self-pollinated individuals a large variation was found in the production of embryos. Some individuals failed completely to set filled achenes while others produced few or many. Additionally, we found a clear difference in female phenology of florets in self-pollinated capitula compared with florets in cross-pollinated capitula. Female florets in self-pollinated capitula remained receptive for longer time. These results suggest that Scalesia affinis is partly self-incompatible. Outcrossing is assured by the endemic carpenter bee, Xylocopa darwini, which proved to be an important pollinator of Scalesia affinis. Nevertheless, geitonogamy seemed to be considerable in the focal population, for which reason open pollinated capitula produced fewer achenes than controlled outcrossed capitula.",
author = "NIELSEN, {LENE ROSTGAARD} and SIEGISMUND, {HANS R.} and MARIANNE PHILIPP",
note = "10.1046/j.1095-8339.2003.00168.x",
year = "2003",
month = may,
day = "1",
doi = "10.1046/j.1095-8339.2003.00168.x",
language = "Dansk",
volume = "142",
pages = "93--101",
journal = "Botanical Journal of the Linnean Society",
issn = "0024-4074",
publisher = "Oxford Academic",
number = "1",

}

RIS

TY - JOUR

T1 - Partial self-incompatibility in the polyploid endemic species Scalesia affinis (Asteraceae) from the Galápagos: remnants of a self-incompatibility system?

AU - NIELSEN, LENE ROSTGAARD

AU - SIEGISMUND, HANS R.

AU - PHILIPP, MARIANNE

N1 - 10.1046/j.1095-8339.2003.00168.x

PY - 2003/5/1

Y1 - 2003/5/1

N2 - Different pollination treatments of capitula were used to examine the breeding system of individuals of the tetraploid endemic species Scalesia affinis from the Galápagos Islands. All types of crossings resulted in approximately 35 achenes per capitulum, but in actively and passively self-pollinated capitula these were mostly without embryos. Among self-pollinated individuals a large variation was found in the production of embryos. Some individuals failed completely to set filled achenes while others produced few or many. Additionally, we found a clear difference in female phenology of florets in self-pollinated capitula compared with florets in cross-pollinated capitula. Female florets in self-pollinated capitula remained receptive for longer time. These results suggest that Scalesia affinis is partly self-incompatible. Outcrossing is assured by the endemic carpenter bee, Xylocopa darwini, which proved to be an important pollinator of Scalesia affinis. Nevertheless, geitonogamy seemed to be considerable in the focal population, for which reason open pollinated capitula produced fewer achenes than controlled outcrossed capitula.

AB - Different pollination treatments of capitula were used to examine the breeding system of individuals of the tetraploid endemic species Scalesia affinis from the Galápagos Islands. All types of crossings resulted in approximately 35 achenes per capitulum, but in actively and passively self-pollinated capitula these were mostly without embryos. Among self-pollinated individuals a large variation was found in the production of embryos. Some individuals failed completely to set filled achenes while others produced few or many. Additionally, we found a clear difference in female phenology of florets in self-pollinated capitula compared with florets in cross-pollinated capitula. Female florets in self-pollinated capitula remained receptive for longer time. These results suggest that Scalesia affinis is partly self-incompatible. Outcrossing is assured by the endemic carpenter bee, Xylocopa darwini, which proved to be an important pollinator of Scalesia affinis. Nevertheless, geitonogamy seemed to be considerable in the focal population, for which reason open pollinated capitula produced fewer achenes than controlled outcrossed capitula.

U2 - 10.1046/j.1095-8339.2003.00168.x

DO - 10.1046/j.1095-8339.2003.00168.x

M3 - Tidsskriftartikel

VL - 142

SP - 93

EP - 101

JO - Botanical Journal of the Linnean Society

JF - Botanical Journal of the Linnean Society

SN - 0024-4074

IS - 1

ER -

ID: 185242162