Viability and seasonal distribution patterns of Scots pine pollen in Finland
Germination ability and airborne counts of Scots pine ( Pinus sylvestris L.) pollen were studied during the spring of 1993 at Turku in southern Finland (60°32′ N, 22°28′ E) and at Utsjoki in northern Finland (69°45′ N, 27°01′ E). Pollen waas trapped from the beginning of May to the end of June in a...
Published in: | Tree Physiology |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Oxford University Press
1995
|
Subjects: | |
Online Access: | http://treephys.oxfordjournals.org/cgi/content/short/15/7-8/515 https://doi.org/10.1093/treephys/15.7-8.515 |
id |
fthighwire:oai:open-archive.highwire.org:treephys:15/7-8/515 |
---|---|
record_format |
openpolar |
spelling |
fthighwire:oai:open-archive.highwire.org:treephys:15/7-8/515 2023-05-15T17:42:16+02:00 Viability and seasonal distribution patterns of Scots pine pollen in Finland Pulkkinen, P. Rantio-Lehtimäki, A. 1995-07-01 00:00:00.0 text/html http://treephys.oxfordjournals.org/cgi/content/short/15/7-8/515 https://doi.org/10.1093/treephys/15.7-8.515 en eng Oxford University Press http://treephys.oxfordjournals.org/cgi/content/short/15/7-8/515 http://dx.doi.org/10.1093/treephys/15.7-8.515 Copyright (C) 1995, Oxford University Press Original Articles TEXT 1995 fthighwire https://doi.org/10.1093/treephys/15.7-8.515 2016-11-16T17:29:55Z Germination ability and airborne counts of Scots pine ( Pinus sylvestris L.) pollen were studied during the spring of 1993 at Turku in southern Finland (60°32′ N, 22°28′ E) and at Utsjoki in northern Finland (69°45′ N, 27°01′ E). Pollen waas trapped from the beginning of May to the end of June in a high-volume air sampler. Germination tests were performed to determine the in vitro pollen viability of the trapped pollen. Airborne pine pollen counts were obtained from a continuously operating Burkard trap located near each high-volume sampler. When male flowering began, phenological observations were carried out on pollen grains collected in rotored samplers located in pine and spruce stands and open fields near Turku and Utsjoki. In southern Finland, the peak period of pine pollen production was short, lasting for only 3 days, but it accounted for about 80% of the total germinating pine pollen yield for the year. The peak count was on May 20, with over 2000 germinating pollen grains per cubic meter of air. Pollen germination rates of up to 70% were obtained during the week preceding the local pollen peak, and rates reached almost 90% on the peak day. Pollen viability remained at 45 to 65% for 1 week after the peak. There was no significant difference between the pollen counts for day and night, indicating that during the main pollen season, the pollen source was close to Turku. Before the local pollen peak, the counts of living pine pollen were low, indicating that pine pollen transported over long distances was of little ecological importance in 1993 in the Turku area. In northern Finland, the first pollen grains were caught on July 4, and the peak day was July 13. However, no viable pollen was observed during this period, indicating that there was little gene drift from southern to northern Finland in 1993. Text Northern Finland Utsjoki HighWire Press (Stanford University) l Pollen ENVELOPE(16.291,16.291,68.361,68.361) Tree Physiology 15 7-8 515 518 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Original Articles |
spellingShingle |
Original Articles Pulkkinen, P. Rantio-Lehtimäki, A. Viability and seasonal distribution patterns of Scots pine pollen in Finland |
topic_facet |
Original Articles |
description |
Germination ability and airborne counts of Scots pine ( Pinus sylvestris L.) pollen were studied during the spring of 1993 at Turku in southern Finland (60°32′ N, 22°28′ E) and at Utsjoki in northern Finland (69°45′ N, 27°01′ E). Pollen waas trapped from the beginning of May to the end of June in a high-volume air sampler. Germination tests were performed to determine the in vitro pollen viability of the trapped pollen. Airborne pine pollen counts were obtained from a continuously operating Burkard trap located near each high-volume sampler. When male flowering began, phenological observations were carried out on pollen grains collected in rotored samplers located in pine and spruce stands and open fields near Turku and Utsjoki. In southern Finland, the peak period of pine pollen production was short, lasting for only 3 days, but it accounted for about 80% of the total germinating pine pollen yield for the year. The peak count was on May 20, with over 2000 germinating pollen grains per cubic meter of air. Pollen germination rates of up to 70% were obtained during the week preceding the local pollen peak, and rates reached almost 90% on the peak day. Pollen viability remained at 45 to 65% for 1 week after the peak. There was no significant difference between the pollen counts for day and night, indicating that during the main pollen season, the pollen source was close to Turku. Before the local pollen peak, the counts of living pine pollen were low, indicating that pine pollen transported over long distances was of little ecological importance in 1993 in the Turku area. In northern Finland, the first pollen grains were caught on July 4, and the peak day was July 13. However, no viable pollen was observed during this period, indicating that there was little gene drift from southern to northern Finland in 1993. |
format |
Text |
author |
Pulkkinen, P. Rantio-Lehtimäki, A. |
author_facet |
Pulkkinen, P. Rantio-Lehtimäki, A. |
author_sort |
Pulkkinen, P. |
title |
Viability and seasonal distribution patterns of Scots pine pollen in Finland |
title_short |
Viability and seasonal distribution patterns of Scots pine pollen in Finland |
title_full |
Viability and seasonal distribution patterns of Scots pine pollen in Finland |
title_fullStr |
Viability and seasonal distribution patterns of Scots pine pollen in Finland |
title_full_unstemmed |
Viability and seasonal distribution patterns of Scots pine pollen in Finland |
title_sort |
viability and seasonal distribution patterns of scots pine pollen in finland |
publisher |
Oxford University Press |
publishDate |
1995 |
url |
http://treephys.oxfordjournals.org/cgi/content/short/15/7-8/515 https://doi.org/10.1093/treephys/15.7-8.515 |
long_lat |
ENVELOPE(16.291,16.291,68.361,68.361) |
geographic |
l Pollen |
geographic_facet |
l Pollen |
genre |
Northern Finland Utsjoki |
genre_facet |
Northern Finland Utsjoki |
op_relation |
http://treephys.oxfordjournals.org/cgi/content/short/15/7-8/515 http://dx.doi.org/10.1093/treephys/15.7-8.515 |
op_rights |
Copyright (C) 1995, Oxford University Press |
op_doi |
https://doi.org/10.1093/treephys/15.7-8.515 |
container_title |
Tree Physiology |
container_volume |
15 |
container_issue |
7-8 |
container_start_page |
515 |
op_container_end_page |
518 |
_version_ |
1766144105647177728 |