Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species
In many gynodioecious species cross‐pollinated seeds from females outperform those from hermaphrodites. Using the gynodioecious alpine perennial Silene acaulis , I investigated whether this was the result of greater biparental inbreeding among hermaphrodites leading to greater biparental inbreeding...
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crwiley:10.3732/ajb.91.1.45 2023-12-03T10:30:16+01:00 Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species Delph, Lynda F. National Science Foundation 2004 http://dx.doi.org/10.3732/ajb.91.1.45 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.3732%2Fajb.91.1.45 https://onlinelibrary.wiley.com/doi/pdf/10.3732/ajb.91.1.45 https://onlinelibrary.wiley.com/doi/full-xml/10.3732/ajb.91.1.45 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.3732%2Fajb.91.1.45 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 91, issue 1, page 45-51 ISSN 0002-9122 1537-2197 Plant Science Genetics Ecology, Evolution, Behavior and Systematics journal-article 2004 crwiley https://doi.org/10.3732/ajb.91.1.45 2023-11-09T13:24:09Z In many gynodioecious species cross‐pollinated seeds from females outperform those from hermaphrodites. Using the gynodioecious alpine perennial Silene acaulis , I investigated whether this was the result of greater biparental inbreeding among hermaphrodites leading to greater biparental inbreeding depression. I also determined the influence of relatedness on progeny fitness. Experiments were performed using individuals from a site whose population structure and coefficient of inbreeding was known. In the first experiment, crosses were made on plants in the field to determine the effect of seven different crossing distances, plus selfing, on germination and early seedling survival and growth. Although selfed seeds died more often and grew slower than crossed seeds, the effect of crossing distance was negligible for all measured fitness traits, refuting the biparental inbreeding hypothesis as a mechanism to explain why seeds from hermaphrodites die more often than those from females. Nonetheless, cross‐pollinated seeds from hermaphrodites did die more, indicating that another mechanism must be responsible. In the second experiment, the effect of different levels of inbreeding on germination and seedling survival was determined by growing seeds from experimental matings varying in relatedness. Inbreeding depression for a multiplicative fitness estimate was significant for all levels of inbreeding, suggesting that inbred individuals are unlikely to become established in the population and providing insight into the results of the first experiment. Alternative hypotheses are discussed to explain why seeds from hermaphrodites die more often, which together with the results of this study, suggest that the restoration of male function in hermaphrodites comes with a correlated cost to seedling survival. Article in Journal/Newspaper Silene acaulis Wiley Online Library (via Crossref) American Journal of Botany 91 1 45 51 |
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Open Polar |
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Wiley Online Library (via Crossref) |
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crwiley |
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English |
topic |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
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Plant Science Genetics Ecology, Evolution, Behavior and Systematics Delph, Lynda F. Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
topic_facet |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
description |
In many gynodioecious species cross‐pollinated seeds from females outperform those from hermaphrodites. Using the gynodioecious alpine perennial Silene acaulis , I investigated whether this was the result of greater biparental inbreeding among hermaphrodites leading to greater biparental inbreeding depression. I also determined the influence of relatedness on progeny fitness. Experiments were performed using individuals from a site whose population structure and coefficient of inbreeding was known. In the first experiment, crosses were made on plants in the field to determine the effect of seven different crossing distances, plus selfing, on germination and early seedling survival and growth. Although selfed seeds died more often and grew slower than crossed seeds, the effect of crossing distance was negligible for all measured fitness traits, refuting the biparental inbreeding hypothesis as a mechanism to explain why seeds from hermaphrodites die more often than those from females. Nonetheless, cross‐pollinated seeds from hermaphrodites did die more, indicating that another mechanism must be responsible. In the second experiment, the effect of different levels of inbreeding on germination and seedling survival was determined by growing seeds from experimental matings varying in relatedness. Inbreeding depression for a multiplicative fitness estimate was significant for all levels of inbreeding, suggesting that inbred individuals are unlikely to become established in the population and providing insight into the results of the first experiment. Alternative hypotheses are discussed to explain why seeds from hermaphrodites die more often, which together with the results of this study, suggest that the restoration of male function in hermaphrodites comes with a correlated cost to seedling survival. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Delph, Lynda F. |
author_facet |
Delph, Lynda F. |
author_sort |
Delph, Lynda F. |
title |
Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
title_short |
Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
title_full |
Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
title_fullStr |
Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
title_full_unstemmed |
Testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
title_sort |
testing for sex differences in biparental inbreeding and its consequences in a gynodioecious species |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.3732/ajb.91.1.45 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.3732%2Fajb.91.1.45 https://onlinelibrary.wiley.com/doi/pdf/10.3732/ajb.91.1.45 https://onlinelibrary.wiley.com/doi/full-xml/10.3732/ajb.91.1.45 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.3732%2Fajb.91.1.45 |
genre |
Silene acaulis |
genre_facet |
Silene acaulis |
op_source |
American Journal of Botany volume 91, issue 1, page 45-51 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.3732/ajb.91.1.45 |
container_title |
American Journal of Botany |
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91 |
container_issue |
1 |
container_start_page |
45 |
op_container_end_page |
51 |
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1784256015820128256 |