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Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant

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Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant. / Hildesheim, Laura; Opedal, Øystein H.; Armbruster, Scott; Pélabon, Christophe.

In: Ecology and Evolution, Vol. 9, 30.12.2019, p. 14253–14260.

Research output: Contribution to journalArticle

Harvard

Hildesheim, L, Opedal, ØH, Armbruster, S & Pélabon, C 2019, 'Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant', Ecology and Evolution, vol. 9, pp. 14253–14260. https://doi.org/10.1002/ece3.5858

APA

Hildesheim, L., Opedal, Ø. H., Armbruster, S., & Pélabon, C. (2019). Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant. Ecology and Evolution, 9, 14253–14260. https://doi.org/10.1002/ece3.5858

Vancouver

Hildesheim L, Opedal ØH, Armbruster S, Pélabon C. Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant. Ecology and Evolution. 2019 Dec 30;9:14253–14260. https://doi.org/10.1002/ece3.5858

Author

Hildesheim, Laura ; Opedal, Øystein H. ; Armbruster, Scott ; Pélabon, Christophe. / Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant. In: Ecology and Evolution. 2019 ; Vol. 9. pp. 14253–14260.

Bibtex

@article{d7a2c5614eb84aac83eddccdd86f59d2,
title = "Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant",
abstract = "Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects by varying the pollen load from a single pollen donor on stigmas of female flowers of Dalechampia scandens (Euphorbiaceae) and measuring the effects on seed number and seed mass. Seed set increased rapidly with pollen number at low to moderate pollen loads, and a maximum set of three seeds occurred with a mean pollen load of 19 pollen grains. We did not detect a trade-off between the number of seeds and seed mass within a fruit. Seed mass increased with increasing pollen load, supporting the hypothesis of enhanced seed quality via increased pollen-competition intensity or genetic sampling. These results suggest that maternal fitness increases with larger pollen loads, even when the fertilization success is already high. Our results further highlight the importance of high rates of pollen arrival onto stigmas, as mediated by reliable pollinators. Comparing the pollen-to-seed response curve obtained in this experiment with those observed in natural populations suggests that pollen limitation may be more severe in natural populations than detected in greenhouse studies. The results also indicate that declining pollinator abundance may decrease seed quality before an effect on seed set is detected.",
keywords = "Dalechampia scandens, pollinator decline, seed set, seed mass, genetic sampling, pollen competition",
author = "Laura Hildesheim and Opedal, {{\O}ystein H.} and Scott Armbruster and Christophe P{\'e}labon",
year = "2019",
month = "12",
day = "30",
doi = "10.1002/ece3.5858",
language = "English",
volume = "9",
pages = "14253–14260",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Ltd",

}

RIS

TY - JOUR

T1 - Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant

AU - Hildesheim, Laura

AU - Opedal, Øystein H.

AU - Armbruster, Scott

AU - Pélabon, Christophe

PY - 2019/12/30

Y1 - 2019/12/30

N2 - Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects by varying the pollen load from a single pollen donor on stigmas of female flowers of Dalechampia scandens (Euphorbiaceae) and measuring the effects on seed number and seed mass. Seed set increased rapidly with pollen number at low to moderate pollen loads, and a maximum set of three seeds occurred with a mean pollen load of 19 pollen grains. We did not detect a trade-off between the number of seeds and seed mass within a fruit. Seed mass increased with increasing pollen load, supporting the hypothesis of enhanced seed quality via increased pollen-competition intensity or genetic sampling. These results suggest that maternal fitness increases with larger pollen loads, even when the fertilization success is already high. Our results further highlight the importance of high rates of pollen arrival onto stigmas, as mediated by reliable pollinators. Comparing the pollen-to-seed response curve obtained in this experiment with those observed in natural populations suggests that pollen limitation may be more severe in natural populations than detected in greenhouse studies. The results also indicate that declining pollinator abundance may decrease seed quality before an effect on seed set is detected.

AB - Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects by varying the pollen load from a single pollen donor on stigmas of female flowers of Dalechampia scandens (Euphorbiaceae) and measuring the effects on seed number and seed mass. Seed set increased rapidly with pollen number at low to moderate pollen loads, and a maximum set of three seeds occurred with a mean pollen load of 19 pollen grains. We did not detect a trade-off between the number of seeds and seed mass within a fruit. Seed mass increased with increasing pollen load, supporting the hypothesis of enhanced seed quality via increased pollen-competition intensity or genetic sampling. These results suggest that maternal fitness increases with larger pollen loads, even when the fertilization success is already high. Our results further highlight the importance of high rates of pollen arrival onto stigmas, as mediated by reliable pollinators. Comparing the pollen-to-seed response curve obtained in this experiment with those observed in natural populations suggests that pollen limitation may be more severe in natural populations than detected in greenhouse studies. The results also indicate that declining pollinator abundance may decrease seed quality before an effect on seed set is detected.

KW - Dalechampia scandens

KW - pollinator decline

KW - seed set

KW - seed mass

KW - genetic sampling

KW - pollen competition

UR - https://onlinelibrary.wiley.com/doi/10.1002/ece3.5858

U2 - 10.1002/ece3.5858

DO - 10.1002/ece3.5858

M3 - Article

VL - 9

SP - 14253

EP - 14260

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

ER -

ID: 15317484