GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA
Germination studies on alpine bluegress (Poa alpina L.) and broad-glumed wheatgrass (Agropyron latiglume Scribn. and Smith [Rydb.]) were undertaken to determine optimum germination conditions, the presence of seed dormancy and the extent of variability among populations for rapid germination. Poa al...
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Language: | English |
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Canadian Science Publishing
1989
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Online Access: | http://dx.doi.org/10.4141/cjps89-139 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjps89-139 |
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crcansciencepubl:10.4141/cjps89-139 2024-09-30T14:41:34+00:00 GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA ACHARYA, SURYA N. 1989 http://dx.doi.org/10.4141/cjps89-139 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjps89-139 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Plant Science volume 69, issue 4, page 1165-1177 ISSN 0008-4220 1918-1833 journal-article 1989 crcansciencepubl https://doi.org/10.4141/cjps89-139 2024-09-05T04:11:14Z Germination studies on alpine bluegress (Poa alpina L.) and broad-glumed wheatgrass (Agropyron latiglume Scribn. and Smith [Rydb.]) were undertaken to determine optimum germination conditions, the presence of seed dormancy and the extent of variability among populations for rapid germination. Poa alpina seeds germinated best under darkness and 16/8 h cycles of 22/15 °C temperature, while A. latiglume needed a 29/22 °C regime and darkness for best germination. Rapid germination in both species occurred within a narrow range of temperature conditions. Light and suboptimal temperatures appeared to have an inhibitory effect on seed germination during the initial period of imbibition. Germination inhibition through external factors (secondary dormancy) and the presence of primary dormancy in the nursery-grown seeds may be a genetic adaptation to stressful alpine environments. This and the differences among populations for seed germination in both species are encouraging for our breeding program which is developing genotypes for alpine and subalpine reclamation.Key words: Alpine bluegrass, broad-glumed wheat grass, temperature effect, light, population, seed germination. Article in Journal/Newspaper Poa alpina Canadian Science Publishing Canadian Journal of Plant Science 69 4 1165 1177 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Germination studies on alpine bluegress (Poa alpina L.) and broad-glumed wheatgrass (Agropyron latiglume Scribn. and Smith [Rydb.]) were undertaken to determine optimum germination conditions, the presence of seed dormancy and the extent of variability among populations for rapid germination. Poa alpina seeds germinated best under darkness and 16/8 h cycles of 22/15 °C temperature, while A. latiglume needed a 29/22 °C regime and darkness for best germination. Rapid germination in both species occurred within a narrow range of temperature conditions. Light and suboptimal temperatures appeared to have an inhibitory effect on seed germination during the initial period of imbibition. Germination inhibition through external factors (secondary dormancy) and the presence of primary dormancy in the nursery-grown seeds may be a genetic adaptation to stressful alpine environments. This and the differences among populations for seed germination in both species are encouraging for our breeding program which is developing genotypes for alpine and subalpine reclamation.Key words: Alpine bluegrass, broad-glumed wheat grass, temperature effect, light, population, seed germination. |
format |
Article in Journal/Newspaper |
author |
ACHARYA, SURYA N. |
spellingShingle |
ACHARYA, SURYA N. GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
author_facet |
ACHARYA, SURYA N. |
author_sort |
ACHARYA, SURYA N. |
title |
GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
title_short |
GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
title_full |
GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
title_fullStr |
GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
title_full_unstemmed |
GERMINATION RESPONSE OF TWO ALPINE GRASSES FROM THE ROCKY MOUNTAINS OF ALBERTA |
title_sort |
germination response of two alpine grasses from the rocky mountains of alberta |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.4141/cjps89-139 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjps89-139 |
genre |
Poa alpina |
genre_facet |
Poa alpina |
op_source |
Canadian Journal of Plant Science volume 69, issue 4, page 1165-1177 ISSN 0008-4220 1918-1833 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.4141/cjps89-139 |
container_title |
Canadian Journal of Plant Science |
container_volume |
69 |
container_issue |
4 |
container_start_page |
1165 |
op_container_end_page |
1177 |
_version_ |
1811644038886981632 |