Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change
Ice tolerance of meadow plants and winter cereals was tested in field and also in artificial ice encasement experiments at -2°C in the laboratory. In general the ice tolerance was on the order of: Grass species > clover species > brassicae species, alpine plant and winter cereal species. Withi...
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ftskemman:oai:skemman.is:1946/19930 2023-05-15T16:49:13+02:00 Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change Svellþol nytjaplantna, uppsöfnun öndunarefna undir svellum á Íslandi og áhrif væntanlegra loftslagsbreytinga Bjarni E. Guðleifsson 1942- Landbúnaðarháskóli Íslands 2010 application/pdf http://hdl.handle.net/1946/19930 en eng http://www.ias.is/landbunadur/wgsamvef.nsf/Attachment/IAS10_BjarniGudleifsson/$file/IAS10_BjarniGudleifsson.pdf Icelandic agricultural sciences 23, 111-122 1670-567x http://hdl.handle.net/1946/19930 Nytjajurtir Kal á gróðri Article 2010 ftskemman 2022-12-11T06:51:11Z Ice tolerance of meadow plants and winter cereals was tested in field and also in artificial ice encasement experiments at -2°C in the laboratory. In general the ice tolerance was on the order of: Grass species > clover species > brassicae species, alpine plant and winter cereal species. Within the grasses the ice tolerance of Bering hairgrass and timothy was higher than in other grass species tested, such as cocksfoot and perennial ryegrass. White clover has significantly higher tolerance than red clover, and winter rye is slightly more tolerant than winter wheat and winter barley. In timothy carbohydrates were metabolised during ice encasement, resulting in carbohydrate decrease and accumulation of metabolites. Accumulation of metabolites in grasses, clover and winter cereals during ice encasement at -2°C was also measured in laboratory tests. All plant species tested accumulated CO2 , ethanol and lactate. Timothy and winter wheat also accumulated malate. On a dry weight basis grasses accumulated metabolites to higher concentrations than winter cereals, and in general the more ice tolerant winter rye accumulated metabolites to higher concentrations than winter wheat. Bering hairgrass accumulated CO2 to higher concentrations than timothy, indicating a faster metabolism. The winter temperature in Northern Iceland has increased substantially during recent decades as a result of climate change. Winter damage caused by ice cover is therefore almost eliminated from the agricultural lowland areas. However, there are indications that higher winter temperatures may increase ice damage in alpine areas and harm snow-loving snowbed plants that previously have been protected by a snow layer and therefore have low ice tolerance. Svellþol túnjurta og vetrarkorns og nokkurra fleiri tegunda var metið í vallartilraunum og einnig í vinnustofutilraunum við -2°C. Í heild reyndist svellþolsröðin þessi: Grastegundir > smárategundir> krossblómategundir, fjallaplanta, vetrarkorn. Innan grastegunda voru beringspuntur og ... Article in Journal/Newspaper Iceland Skemman (Iceland) |
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Open Polar |
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Skemman (Iceland) |
op_collection_id |
ftskemman |
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English |
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Nytjajurtir Kal á gróðri |
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Nytjajurtir Kal á gróðri Bjarni E. Guðleifsson 1942- Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
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Nytjajurtir Kal á gróðri |
description |
Ice tolerance of meadow plants and winter cereals was tested in field and also in artificial ice encasement experiments at -2°C in the laboratory. In general the ice tolerance was on the order of: Grass species > clover species > brassicae species, alpine plant and winter cereal species. Within the grasses the ice tolerance of Bering hairgrass and timothy was higher than in other grass species tested, such as cocksfoot and perennial ryegrass. White clover has significantly higher tolerance than red clover, and winter rye is slightly more tolerant than winter wheat and winter barley. In timothy carbohydrates were metabolised during ice encasement, resulting in carbohydrate decrease and accumulation of metabolites. Accumulation of metabolites in grasses, clover and winter cereals during ice encasement at -2°C was also measured in laboratory tests. All plant species tested accumulated CO2 , ethanol and lactate. Timothy and winter wheat also accumulated malate. On a dry weight basis grasses accumulated metabolites to higher concentrations than winter cereals, and in general the more ice tolerant winter rye accumulated metabolites to higher concentrations than winter wheat. Bering hairgrass accumulated CO2 to higher concentrations than timothy, indicating a faster metabolism. The winter temperature in Northern Iceland has increased substantially during recent decades as a result of climate change. Winter damage caused by ice cover is therefore almost eliminated from the agricultural lowland areas. However, there are indications that higher winter temperatures may increase ice damage in alpine areas and harm snow-loving snowbed plants that previously have been protected by a snow layer and therefore have low ice tolerance. Svellþol túnjurta og vetrarkorns og nokkurra fleiri tegunda var metið í vallartilraunum og einnig í vinnustofutilraunum við -2°C. Í heild reyndist svellþolsröðin þessi: Grastegundir > smárategundir> krossblómategundir, fjallaplanta, vetrarkorn. Innan grastegunda voru beringspuntur og ... |
author2 |
Landbúnaðarháskóli Íslands |
format |
Article in Journal/Newspaper |
author |
Bjarni E. Guðleifsson 1942- |
author_facet |
Bjarni E. Guðleifsson 1942- |
author_sort |
Bjarni E. Guðleifsson 1942- |
title |
Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
title_short |
Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
title_full |
Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
title_fullStr |
Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
title_full_unstemmed |
Ice tolerance and metabolite accumulation of herbage crops in Iceland and impact of climate change |
title_sort |
ice tolerance and metabolite accumulation of herbage crops in iceland and impact of climate change |
publishDate |
2010 |
url |
http://hdl.handle.net/1946/19930 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://www.ias.is/landbunadur/wgsamvef.nsf/Attachment/IAS10_BjarniGudleifsson/$file/IAS10_BjarniGudleifsson.pdf Icelandic agricultural sciences 23, 111-122 1670-567x http://hdl.handle.net/1946/19930 |
_version_ |
1766039370473668608 |