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Identification of Ideal Allele Combinations for the Adaptation of Spring Barley to Northern Latitudes

Identification of Ideal Allele Combinations for the Adaptation of Spring Barley to Northern Latitudes


Title: Identification of Ideal Allele Combinations for the Adaptation of Spring Barley to Northern Latitudes
Author: Göransson, Magnus   orcid.org/0000-0002-0081-2207
Hallsson, Jon   orcid.org/0000-0002-9127-2137
Lillemo, Morten   orcid.org/0000-0002-8594-8794
Orabi, Jihad   orcid.org/0000-0001-9641-6657
Backes, Gunter
Jahoor, Ahmed
Hermannsson, Jónatan
Christerson, Therese
Tuvesson, Stine
Gertsson, Bo
... 10 more authors Show all authors
Date: 2019-05-03
Language: English
Scope: 542
University/Institute: Landbúnaðarháskóli Íslands
Agricultural University of Iceland
Department: Auðlinda- og umhverfisdeild (LBHÍ)
Faculty of Natural Resources and Environmental Sciences (AUI)
Series: Frontiers in Plant Science;10(542)
ISSN: 1664-462X
DOI: 10.3389/fpls.2019.00542
Subject: Plant Science; Plant Breeding; Barley; Plöntulífeðlisfræði; Kornrækt; Bygg
URI: https://hdl.handle.net/20.500.11815/1293

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Citation:

Göransson, M., Hallsson, J. H., Lillemo, M., Orabi, J., Backes, G., Jahoor, A., ... & Reitan, L. (2019). Identification of ideal allele combinations for the adaptation of spring barley to Northern latitudes. Frontiers in plant science, 10, 542.

Abstract:

The northwards expansion of barley production requires adaptation to longer days, lower temperatures and stronger winds during the growing season. We have screened 169 lines of the current barley breeding gene pool in the Nordic region with regards to heading, maturity, height, and lodging under different environmental conditions in nineteen field trials over 3 years at eight locations in northern and central Europe. Through a genome-wide association scan we have linked phenotypic differences observed in multi-environment field trials (MET) to single nucleotide polymorphisms (SNP). We have identified an allele combination, only occurring among a few Icelandic lines, that affects heat sum to maturity and requires 214 growing degree days (GDD) less heat sum to maturity than the most common allele combination in the Nordic spring barley gene pool. This allele combination is beneficial in a cold environment, where autumn frost can destroy a late maturing harvest. Despite decades of intense breeding efforts relying heavily on the same germplasm, our results show that there still exists considerable variation within the current breeding gene pool and we identify ideal allele combinations for regional adaptation, which can facilitate the expansion of cereal cultivation even further northwards.

Rights:

Frontiers is fully compliant with open access mandates, by publishing its articles under the Creative Commons Attribution licence (CC-BY). Funder mandates such as those by the Wellcome Trust (UK), National Institutes of Health (USA) and the Australian Research Council (Australia) are fully compatible with publishing in Frontiers. Authors retain copyright of their work and can deposit their publication in any repository. The work can be freely shared and adapted provided that appropriate credit is given and any changes specified.

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