Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies
Based on morphological characters, Silene acaulis subsp. exscapa and Silene acaulis subsp. cenisia have been previously described as dioecious and trioecious, respectively. Here we examine whether these subspecies are truly dioecious (subsp. exscapa) and trioecious (subsp. cenisia) based on individu...
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crcansciencepubl:10.1139/b98-023 2023-12-17T10:49:59+01:00 Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies Maurice, Sandrine Desfeux, Christine Mignot, Agnes Henry, Jean-Pierre 1998 http://dx.doi.org/10.1139/b98-023 http://www.nrcresearchpress.com/doi/pdf/10.1139/b98-023 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 76, issue 3, page 478-485 ISSN 0008-4026 Plant Science journal-article 1998 crcansciencepubl https://doi.org/10.1139/b98-023 2023-11-19T13:39:16Z Based on morphological characters, Silene acaulis subsp. exscapa and Silene acaulis subsp. cenisia have been previously described as dioecious and trioecious, respectively. Here we examine whether these subspecies are truly dioecious (subsp. exscapa) and trioecious (subsp. cenisia) based on individual seed and pollen production. Nine populations of subsp. cenisia and five populations of subsp. exscapa were studied in the French Alps. The ratio of staminate to female plants within populations did not in general differ from 1:1, the sex ratio expected in dioecious populations. Staminate plants of both subspecies were found to set fruits. In subsp.exscapa, the ratio of fruit production in female versus staminate plants is around 900; in subsp. cenisia, this ratio is around 10. The advantage of female plants in fruit production is not always sufficient to explain their frequencies in natural populations. Staminate plants cannot be divided in two distinct categories: males and hermaphrodites. The two subspecies can be best described as subdioecious, although S. a. exscapa is effectively closer to exhibiting true dioecy than S. a. cenisia.Key words: breeding systems, trioecy, subdioecy, Silene acaulis. Article in Journal/Newspaper Silene acaulis Canadian Science Publishing (via Crossref) Canadian Journal of Botany 76 3 478 485 |
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Canadian Science Publishing (via Crossref) |
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English |
topic |
Plant Science |
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Plant Science Maurice, Sandrine Desfeux, Christine Mignot, Agnes Henry, Jean-Pierre Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
topic_facet |
Plant Science |
description |
Based on morphological characters, Silene acaulis subsp. exscapa and Silene acaulis subsp. cenisia have been previously described as dioecious and trioecious, respectively. Here we examine whether these subspecies are truly dioecious (subsp. exscapa) and trioecious (subsp. cenisia) based on individual seed and pollen production. Nine populations of subsp. cenisia and five populations of subsp. exscapa were studied in the French Alps. The ratio of staminate to female plants within populations did not in general differ from 1:1, the sex ratio expected in dioecious populations. Staminate plants of both subspecies were found to set fruits. In subsp.exscapa, the ratio of fruit production in female versus staminate plants is around 900; in subsp. cenisia, this ratio is around 10. The advantage of female plants in fruit production is not always sufficient to explain their frequencies in natural populations. Staminate plants cannot be divided in two distinct categories: males and hermaphrodites. The two subspecies can be best described as subdioecious, although S. a. exscapa is effectively closer to exhibiting true dioecy than S. a. cenisia.Key words: breeding systems, trioecy, subdioecy, Silene acaulis. |
format |
Article in Journal/Newspaper |
author |
Maurice, Sandrine Desfeux, Christine Mignot, Agnes Henry, Jean-Pierre |
author_facet |
Maurice, Sandrine Desfeux, Christine Mignot, Agnes Henry, Jean-Pierre |
author_sort |
Maurice, Sandrine |
title |
Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
title_short |
Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
title_full |
Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
title_fullStr |
Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
title_full_unstemmed |
Is Silene acaulis (Caryophyllaceae) a trioecious species? Reproductive biology of two subspecies |
title_sort |
is silene acaulis (caryophyllaceae) a trioecious species? reproductive biology of two subspecies |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/b98-023 http://www.nrcresearchpress.com/doi/pdf/10.1139/b98-023 |
genre |
Silene acaulis |
genre_facet |
Silene acaulis |
op_source |
Canadian Journal of Botany volume 76, issue 3, page 478-485 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b98-023 |
container_title |
Canadian Journal of Botany |
container_volume |
76 |
container_issue |
3 |
container_start_page |
478 |
op_container_end_page |
485 |
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1785574625949777920 |