Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties
Genetic engineering is becoming an important tool for the improvement of plants for various forms of production. As varieties are developed for both food and non-food use different production lines must be kept separate. For good management practices of different lines an understanding of gene-flow...
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Online Access: | http://hdl.handle.net/1946/19924 |
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ftskemman:oai:skemman.is:1946/19924 2023-05-15T15:02:11+02:00 Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties Mælingar á genaflæði í byggökrum við íslenskar aðstæður Jónatan Hermannsson 1946- Þórdís Anna Kristjánsdóttir 1953- Tryggvi Sturla Stefánsson 1982- Jón Hallsteinn Hallsson 1976- Landbúnaðarháskóli Íslands 2010 application/pdf http://hdl.handle.net/1946/19924 en eng http://www.ias.is/landbunadur/wgsamvef.nsf/Attachment/IAS10_JonatanHermannssonetal/$file/IAS10_JonatanHermannssonetal.pdf Icelandic agricultural sciences 23, 51-59 1670-567x http://hdl.handle.net/1946/19924 Kornrækt Bygg Gen Article 2010 ftskemman 2022-12-11T06:54:21Z Genetic engineering is becoming an important tool for the improvement of plants for various forms of production. As varieties are developed for both food and non-food use different production lines must be kept separate. For good management practices of different lines an understanding of gene-flow is essential. Barley has been proposed to be an ideal plant species for genetic engineering as it has a low frequency of crossfertilization and limited seed dispersal. In the present study, pollen-mediated exchange of genetic material between non-transgenic closed-flowering barley variants was examined in experimental plots under sub-arctic conditions in Iceland. The pollen-mediated dispersal was studied using the barley varieties Golden Promise and Ven, as pollen donor and acceptor, respectively. Only two hybrid plants were identified from a total of 700,000 screened plants giving a hybridization frequency of 0.0003%. It is concluded that adequate isolation distances and good management practices should suffice to prevent cross-fertilization between different lines of barley. Eftir því sem erfðatækni vex fiskur um hrygg við kynbætur á plöntum, bæði til fæðu- og iðnaðarframleiðslu, verður sífellt mikilvægara að halda kynbótalínum aðskildum. Við ræktun á kynbótaefniviði er því nauðsynlegt að þekkja vel genaflæði í þeirri tegund sem verið er að vinna með hverju sinni. Talið er að bygg henti vel til kynbóta með erfðatækni þar sem það er að langmestu leyti sjálffrjóvga og dreifing á fræi takmörkuð. Í rannsókninni sem hér er kynnt var flutningur erfðaefnis milli byggyrkja með lokuð blóm rannsakaður í tilraunareitum við íslenskar aðstæður. Byggyrkin Golden Promise, sem þjónaði hlutverki frjógjafa, og Ven, sem þjónaði hlutverki frjóþega, voru ræktuð hlið við hlið í tilraunareitum. Skoðaðir voru 700.000 einstaklingar og fundust einungis tveir blendingar sem jafngildir 0,0003%. Því má telja að alfarið sé hægt að koma í veg fyrir flutning erfðaefnis milli byggyrkja með því að hafa lágmarksfjarlægð milli akra og viðhafa góð ... Article in Journal/Newspaper Arctic Iceland Skemman (Iceland) Arctic Halda ENVELOPE(25.170,25.170,70.853,70.853) Akra ENVELOPE(136.852,136.852,60.747,60.747) |
institution |
Open Polar |
collection |
Skemman (Iceland) |
op_collection_id |
ftskemman |
language |
English |
topic |
Kornrækt Bygg Gen |
spellingShingle |
Kornrækt Bygg Gen Jónatan Hermannsson 1946- Þórdís Anna Kristjánsdóttir 1953- Tryggvi Sturla Stefánsson 1982- Jón Hallsteinn Hallsson 1976- Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
topic_facet |
Kornrækt Bygg Gen |
description |
Genetic engineering is becoming an important tool for the improvement of plants for various forms of production. As varieties are developed for both food and non-food use different production lines must be kept separate. For good management practices of different lines an understanding of gene-flow is essential. Barley has been proposed to be an ideal plant species for genetic engineering as it has a low frequency of crossfertilization and limited seed dispersal. In the present study, pollen-mediated exchange of genetic material between non-transgenic closed-flowering barley variants was examined in experimental plots under sub-arctic conditions in Iceland. The pollen-mediated dispersal was studied using the barley varieties Golden Promise and Ven, as pollen donor and acceptor, respectively. Only two hybrid plants were identified from a total of 700,000 screened plants giving a hybridization frequency of 0.0003%. It is concluded that adequate isolation distances and good management practices should suffice to prevent cross-fertilization between different lines of barley. Eftir því sem erfðatækni vex fiskur um hrygg við kynbætur á plöntum, bæði til fæðu- og iðnaðarframleiðslu, verður sífellt mikilvægara að halda kynbótalínum aðskildum. Við ræktun á kynbótaefniviði er því nauðsynlegt að þekkja vel genaflæði í þeirri tegund sem verið er að vinna með hverju sinni. Talið er að bygg henti vel til kynbóta með erfðatækni þar sem það er að langmestu leyti sjálffrjóvga og dreifing á fræi takmörkuð. Í rannsókninni sem hér er kynnt var flutningur erfðaefnis milli byggyrkja með lokuð blóm rannsakaður í tilraunareitum við íslenskar aðstæður. Byggyrkin Golden Promise, sem þjónaði hlutverki frjógjafa, og Ven, sem þjónaði hlutverki frjóþega, voru ræktuð hlið við hlið í tilraunareitum. Skoðaðir voru 700.000 einstaklingar og fundust einungis tveir blendingar sem jafngildir 0,0003%. Því má telja að alfarið sé hægt að koma í veg fyrir flutning erfðaefnis milli byggyrkja með því að hafa lágmarksfjarlægð milli akra og viðhafa góð ... |
author2 |
Landbúnaðarháskóli Íslands |
format |
Article in Journal/Newspaper |
author |
Jónatan Hermannsson 1946- Þórdís Anna Kristjánsdóttir 1953- Tryggvi Sturla Stefánsson 1982- Jón Hallsteinn Hallsson 1976- |
author_facet |
Jónatan Hermannsson 1946- Þórdís Anna Kristjánsdóttir 1953- Tryggvi Sturla Stefánsson 1982- Jón Hallsteinn Hallsson 1976- |
author_sort |
Jónatan Hermannsson 1946- |
title |
Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
title_short |
Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
title_full |
Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
title_fullStr |
Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
title_full_unstemmed |
Measuring gene flow in barley fields under Icelandic sub-arctic conditions using closed-flowering varieties |
title_sort |
measuring gene flow in barley fields under icelandic sub-arctic conditions using closed-flowering varieties |
publishDate |
2010 |
url |
http://hdl.handle.net/1946/19924 |
long_lat |
ENVELOPE(25.170,25.170,70.853,70.853) ENVELOPE(136.852,136.852,60.747,60.747) |
geographic |
Arctic Halda Akra |
geographic_facet |
Arctic Halda Akra |
genre |
Arctic Iceland |
genre_facet |
Arctic Iceland |
op_relation |
http://www.ias.is/landbunadur/wgsamvef.nsf/Attachment/IAS10_JonatanHermannssonetal/$file/IAS10_JonatanHermannssonetal.pdf Icelandic agricultural sciences 23, 51-59 1670-567x http://hdl.handle.net/1946/19924 |
_version_ |
1766334158904229888 |