The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination

Judith A Irwin; Paul A Ashton; Francois Bretagnolle; Richard John Abbott

doi:10.1080/17550874.2016.1181116

The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination

Judith A Irwin, Paul A Ashton, Francois Bretagnolle, Richard John Abbott

Research output: Contribution to journal › Article › peer-review

Abstract

Background: It has been reported that some plants of the self-compatible species, Senecio vulgaris, produce capitula containing long-styled florets which fail to set seed when left to self-pollinate, although readily set seed when self-pollinated by hand.
Aims: To determine if production of long-styled florets is associated with higher
outcrossing rate in S. vulgaris, and whether long-styles occur in non-pollinated
florets, whereas short-styles are present in self-pollinated florets.
Methods: The frequency of long-styled florets was compared in the radiate and non-radiate variants of S. vulgaris, known to exhibit higher and lower outcrossing rates, respectively. In addition, style length was compared in emasculated florets that were either self-pollinated or left non-pollinated.
Results: Long-styled florets were more frequent in the higher outcrossing radiate variant. Following emasculation, long styles occurred in non-pollinated florets, while short styles were present in self-pollinated florets. The two variants did not differ in style length within the non-pollinated or within the self-pollinated floret categories.
Conclusions: A high frequency of long-styled florets is associated with higher
outcrossing rate in S. vulgaris and results from delayed self-pollination and pollen germination on stigmas.

Original language	English
Pages (from-to)	159-165
Number of pages	7
Journal	Plant Ecology & Diversity
Volume	9
Issue number	2
Early online date	25 May 2016
DOIs	https://doi.org/10.1080/17550874.2016.1181116
Publication status	Published - 2016

Keywords

Asteraceae
Outcrossing rate
Pollination
Pollen germination
Ray and disc florets
Selfing
Senecio
Style length

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10.1080/17550874.2016.1181116Licence: CC BY

Irwin-PlantEcologyDiversity-Longandshort_CC
© 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
Final published version, 477 KBLicence: CC BY-ND
Irwin-PlantEcologyDiversity-Longandshort_CCBY
© 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 581 KBLicence: CC BY

Cite this

@article{f32e1330862a4ee2a96b6ac4bbeae0cb,

title = "The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination",

abstract = "Background: It has been reported that some plants of the self-compatible species, Senecio vulgaris, produce capitula containing long-styled florets which fail to set seed when left to self-pollinate, although readily set seed when self-pollinated by hand.Aims: To determine if production of long-styled florets is associated with higheroutcrossing rate in S. vulgaris, and whether long-styles occur in non-pollinatedflorets, whereas short-styles are present in self-pollinated florets.Methods: The frequency of long-styled florets was compared in the radiate and non-radiate variants of S. vulgaris, known to exhibit higher and lower outcrossing rates, respectively. In addition, style length was compared in emasculated florets that were either self-pollinated or left non-pollinated.Results: Long-styled florets were more frequent in the higher outcrossing radiate variant. Following emasculation, long styles occurred in non-pollinated florets, while short styles were present in self-pollinated florets. The two variants did not differ in style length within the non-pollinated or within the self-pollinated floret categories.Conclusions: A high frequency of long-styled florets is associated with higheroutcrossing rate in S. vulgaris and results from delayed self-pollination and pollen germination on stigmas.",

keywords = "Asteraceae, Outcrossing rate, Pollination, Pollen germination, Ray and disc florets, Selfing, Senecio, Style length",

author = "Irwin, {Judith A} and Ashton, {Paul A} and Francois Bretagnolle and Abbott, {Richard John}",

note = "The research reported in this article was funded in part by the Natural Environment Research Council under grants: GR3/6203A - Male competition and outcrossing rate in a hermaphrodite plant. GR9/1782A – Genomic analysis of wild hybrid derivatives of Senecio squalidus x S. vulgaris using in situ hybridization. ",

year = "2016",

doi = "10.1080/17550874.2016.1181116",

language = "English",

volume = "9",

pages = "159--165",

journal = "Plant Ecology & Diversity",

issn = "1755-0874",

publisher = "Routledge Taylor & Francis Group",

number = "2",

}

TY - JOUR

T1 - The long and the short of it

T2 - long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination

AU - Irwin, Judith A

AU - Ashton, Paul A

AU - Bretagnolle, Francois

AU - Abbott, Richard John

N1 - The research reported in this article was funded in part by the Natural Environment Research Council under grants: GR3/6203A - Male competition and outcrossing rate in a hermaphrodite plant. GR9/1782A – Genomic analysis of wild hybrid derivatives of Senecio squalidus x S. vulgaris using in situ hybridization.

PY - 2016

Y1 - 2016

N2 - Background: It has been reported that some plants of the self-compatible species, Senecio vulgaris, produce capitula containing long-styled florets which fail to set seed when left to self-pollinate, although readily set seed when self-pollinated by hand.Aims: To determine if production of long-styled florets is associated with higheroutcrossing rate in S. vulgaris, and whether long-styles occur in non-pollinatedflorets, whereas short-styles are present in self-pollinated florets.Methods: The frequency of long-styled florets was compared in the radiate and non-radiate variants of S. vulgaris, known to exhibit higher and lower outcrossing rates, respectively. In addition, style length was compared in emasculated florets that were either self-pollinated or left non-pollinated.Results: Long-styled florets were more frequent in the higher outcrossing radiate variant. Following emasculation, long styles occurred in non-pollinated florets, while short styles were present in self-pollinated florets. The two variants did not differ in style length within the non-pollinated or within the self-pollinated floret categories.Conclusions: A high frequency of long-styled florets is associated with higheroutcrossing rate in S. vulgaris and results from delayed self-pollination and pollen germination on stigmas.

AB - Background: It has been reported that some plants of the self-compatible species, Senecio vulgaris, produce capitula containing long-styled florets which fail to set seed when left to self-pollinate, although readily set seed when self-pollinated by hand.Aims: To determine if production of long-styled florets is associated with higheroutcrossing rate in S. vulgaris, and whether long-styles occur in non-pollinatedflorets, whereas short-styles are present in self-pollinated florets.Methods: The frequency of long-styled florets was compared in the radiate and non-radiate variants of S. vulgaris, known to exhibit higher and lower outcrossing rates, respectively. In addition, style length was compared in emasculated florets that were either self-pollinated or left non-pollinated.Results: Long-styled florets were more frequent in the higher outcrossing radiate variant. Following emasculation, long styles occurred in non-pollinated florets, while short styles were present in self-pollinated florets. The two variants did not differ in style length within the non-pollinated or within the self-pollinated floret categories.Conclusions: A high frequency of long-styled florets is associated with higheroutcrossing rate in S. vulgaris and results from delayed self-pollination and pollen germination on stigmas.

KW - Asteraceae

KW - Outcrossing rate

KW - Pollination

KW - Pollen germination

KW - Ray and disc florets

KW - Selfing

KW - Senecio

KW - Style length

U2 - 10.1080/17550874.2016.1181116

DO - 10.1080/17550874.2016.1181116

M3 - Article

SN - 1755-0874

VL - 9

SP - 159

EP - 165

JO - Plant Ecology & Diversity

JF - Plant Ecology & Diversity

IS - 2

ER -

The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination

Abstract

Keywords

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