Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides
Polygonum viviparum is widely distributed in arctic and alpine regions of the northern hemisphere. Fruit set has never been observed in North American populations and has been reported only very rarely in Europe. Although this species is extremely well studied, the impediments to successful fruit pr...
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fthighwire:oai:open-archive.highwire.org:annbot:89/2/145 2023-05-15T15:06:02+02:00 Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides DIGGLE, PAMELA K. MEIXNER, MARGARET A. CARROLL, AMY B. ASCHWANDEN, CHRISTIE F. 2002-02-01 00:00:00.0 text/html http://aob.oxfordjournals.org/cgi/content/short/89/2/145 https://doi.org/10.1093/aob/mcf020 en eng Oxford University Press http://aob.oxfordjournals.org/cgi/content/short/89/2/145 http://dx.doi.org/10.1093/aob/mcf020 Copyright (C) 2002, Oxford University Press ORIGINAL ARTICLES TEXT 2002 fthighwire https://doi.org/10.1093/aob/mcf020 2013-05-27T08:53:50Z Polygonum viviparum is widely distributed in arctic and alpine regions of the northern hemisphere. Fruit set has never been observed in North American populations and has been reported only very rarely in Europe. Although this species is extremely well studied, the impediments to successful fruit production are unknown. We investigated the sexual reproductive process in P. viviparum growing in the southern Colorado Rocky Mountains. For comparison, we also examined this process in the sympatric congener P. bistortoides , in which reproduction is exclusively sexual. Lack of viable fruit production in P. viviparum has no single developmental explanation; defects occur in each of the processes and structures associated with sexual reproduction studied, yet, these processes and structures also appear to function normally in at least some flowers or individuals. Development is abnormal in many ovules of P. viviparum , however, comparison with P. bistortoides shows that these abnormalities do not contribute to differences in seed production between the two species. The virtual absence of sexual reproduction in P. viviparum appears to be due largely to a low rate of fertilization and to embryo/fruit abortion . Text Arctic Polygonum viviparum HighWire Press (Stanford University) Arctic Annals of Botany 89 2 145 156 |
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HighWire Press (Stanford University) |
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English |
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ORIGINAL ARTICLES |
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ORIGINAL ARTICLES DIGGLE, PAMELA K. MEIXNER, MARGARET A. CARROLL, AMY B. ASCHWANDEN, CHRISTIE F. Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
topic_facet |
ORIGINAL ARTICLES |
description |
Polygonum viviparum is widely distributed in arctic and alpine regions of the northern hemisphere. Fruit set has never been observed in North American populations and has been reported only very rarely in Europe. Although this species is extremely well studied, the impediments to successful fruit production are unknown. We investigated the sexual reproductive process in P. viviparum growing in the southern Colorado Rocky Mountains. For comparison, we also examined this process in the sympatric congener P. bistortoides , in which reproduction is exclusively sexual. Lack of viable fruit production in P. viviparum has no single developmental explanation; defects occur in each of the processes and structures associated with sexual reproduction studied, yet, these processes and structures also appear to function normally in at least some flowers or individuals. Development is abnormal in many ovules of P. viviparum , however, comparison with P. bistortoides shows that these abnormalities do not contribute to differences in seed production between the two species. The virtual absence of sexual reproduction in P. viviparum appears to be due largely to a low rate of fertilization and to embryo/fruit abortion . |
format |
Text |
author |
DIGGLE, PAMELA K. MEIXNER, MARGARET A. CARROLL, AMY B. ASCHWANDEN, CHRISTIE F. |
author_facet |
DIGGLE, PAMELA K. MEIXNER, MARGARET A. CARROLL, AMY B. ASCHWANDEN, CHRISTIE F. |
author_sort |
DIGGLE, PAMELA K. |
title |
Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
title_short |
Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
title_full |
Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
title_fullStr |
Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
title_full_unstemmed |
Barriers to Sexual Reproduction in Polygonum viviparum: A Comparative Developmental Analysis of P. viviparum and P. bistortoides |
title_sort |
barriers to sexual reproduction in polygonum viviparum: a comparative developmental analysis of p. viviparum and p. bistortoides |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://aob.oxfordjournals.org/cgi/content/short/89/2/145 https://doi.org/10.1093/aob/mcf020 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Polygonum viviparum |
genre_facet |
Arctic Polygonum viviparum |
op_relation |
http://aob.oxfordjournals.org/cgi/content/short/89/2/145 http://dx.doi.org/10.1093/aob/mcf020 |
op_rights |
Copyright (C) 2002, Oxford University Press |
op_doi |
https://doi.org/10.1093/aob/mcf020 |
container_title |
Annals of Botany |
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89 |
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2 |
container_start_page |
145 |
op_container_end_page |
156 |
_version_ |
1766337697229570048 |