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Towards a genetic understanding of seed vigour in small-seeded crops using natural variation in Brassica oleracea
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Finch-Savage, William E., Clay, Heather A., Lynn, James R. and Morris, Karl, Dr. (2010) Towards a genetic understanding of seed vigour in small-seeded crops using natural variation in Brassica oleracea. Plant Science, Vol.179 (No.6). pp. 582-589. doi:10.1016/j.plantsci.2010.06.005 ISSN 0168-9452.
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Official URL: http://dx.doi.org/10.1016/j.plantsci.2010.06.005
Abstract
Seedling establishment is critical to profitable and sustainable production from small-seeded crops. A programme of work is reported that identifies key seed vigour traits that are required for predictable seedling establishment followed by a quantitative genetic analysis to identify loci that influence them. The three key traits were: (1) rapid germination; (2) rapid initial downward growth of the seedling; and (3) a high potential for upward shoot growth in soil of increasing impedance. All three traits reduce the time between sowing and seedling emergence when the seed bed can be deteriorating. This suggests a strategy of stress avoidance, through rapid progress when adequate moisture is present, rather than reliance on stress tolerance. B. oleracea doubled haploid mapping populations were screened for these traits and quantitative trait loci (QTL) were identified. These QTL were then subsequently fine-mapped where possible. We report on the outcome of this work and discuss the results in the context of other QTL studies. A way forward for marker and candidate gene identification is then outlined that uses a translational approach to exploit the colinearity that exists between B. oleracea and the model plant Arabidopsis. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry S Agriculture > SB Plant culture |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
| Journal or Publication Title: | Plant Science | ||||
| Publisher: | Elsevier Ireland Ltd | ||||
| ISSN: | 0168-9452 | ||||
| Official Date: | December 2010 | ||||
| Dates: |
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| Volume: | Vol.179 | ||||
| Number: | No.6 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | pp. 582-589 | ||||
| DOI: | 10.1016/j.plantsci.2010.06.005 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Great Britain. Dept. for Environment, Food & Rural Affairs (DEFRA), Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC) | ||||
| Grant number: | BB/E006418/1 (BBSRC) |
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