Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden
SUMMARY The aim of this study was to test the hypothesis that increased pollination enhances the probability of‘pollen competition’in Betula pubescent. In an in vitro test, the germination of pollen from three B. pubescens trees, increased with increasing pollen density (r 2 = 0·82, 0·81 and 0·82, r...
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Online Access: | http://dx.doi.org/10.1111/j.1469-8137.1994.tb04253.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-8137.1994.tb04253.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x |
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crwiley:10.1111/j.1469-8137.1994.tb04253.x 2023-12-03T10:27:55+01:00 Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden HOLM, S. O. 1994 http://dx.doi.org/10.1111/j.1469-8137.1994.tb04253.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-8137.1994.tb04253.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 126, issue 3, page 541-547 ISSN 0028-646X 1469-8137 Plant Science Physiology journal-article 1994 crwiley https://doi.org/10.1111/j.1469-8137.1994.tb04253.x 2023-11-09T13:55:05Z SUMMARY The aim of this study was to test the hypothesis that increased pollination enhances the probability of‘pollen competition’in Betula pubescent. In an in vitro test, the germination of pollen from three B. pubescens trees, increased with increasing pollen density (r 2 = 0·82, 0·81 and 0·82, respectively). Pollen tubes grew at different rates in styles when testing different paternal/maternal combinations. Evidence was obtained to suggest that these differences might be attributed to both maternal and paternal effects. Further, increasing the number of tubes per style tended to increase the length of the longest tube per style, but had no significant effect on the mean length of the tubes. The r values, for the correlations of lengths with numbers of pollen tubes per style, were lower in two natural B pubescens populations than in the data from a controlled pollination experiment, is concluded that selection among male gametes may occur after supplementary pollination in B. pubescens , but in natural situations, pollen deposition is usually too low for pollen Selection to be a common occurrence. Article in Journal/Newspaper Northern Sweden Wiley Online Library (via Crossref) New Phytologist 126 3 541 547 |
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Wiley Online Library (via Crossref) |
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language |
English |
topic |
Plant Science Physiology |
spellingShingle |
Plant Science Physiology HOLM, S. O. Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
topic_facet |
Plant Science Physiology |
description |
SUMMARY The aim of this study was to test the hypothesis that increased pollination enhances the probability of‘pollen competition’in Betula pubescent. In an in vitro test, the germination of pollen from three B. pubescens trees, increased with increasing pollen density (r 2 = 0·82, 0·81 and 0·82, respectively). Pollen tubes grew at different rates in styles when testing different paternal/maternal combinations. Evidence was obtained to suggest that these differences might be attributed to both maternal and paternal effects. Further, increasing the number of tubes per style tended to increase the length of the longest tube per style, but had no significant effect on the mean length of the tubes. The r values, for the correlations of lengths with numbers of pollen tubes per style, were lower in two natural B pubescens populations than in the data from a controlled pollination experiment, is concluded that selection among male gametes may occur after supplementary pollination in B. pubescens , but in natural situations, pollen deposition is usually too low for pollen Selection to be a common occurrence. |
format |
Article in Journal/Newspaper |
author |
HOLM, S. O. |
author_facet |
HOLM, S. O. |
author_sort |
HOLM, S. O. |
title |
Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
title_short |
Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
title_full |
Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
title_fullStr |
Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
title_full_unstemmed |
Pollination density ‐ effects on pollen germination and pollen tube growth in Betula pubescens Ehrh. in northern Sweden |
title_sort |
pollination density ‐ effects on pollen germination and pollen tube growth in betula pubescens ehrh. in northern sweden |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1111/j.1469-8137.1994.tb04253.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-8137.1994.tb04253.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1994.tb04253.x |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
New Phytologist volume 126, issue 3, page 541-547 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-8137.1994.tb04253.x |
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New Phytologist |
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126 |
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3 |
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541 |
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547 |
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1784277881720930304 |