Document Detail


QTL mapping of physiological traits associated with salt tolerance in Medicago truncatula Recombinant Inbred Lines.
MedLine Citation:
PMID:  22178264     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this study, QTL mapping of physiological traits in Medicago truncatula was performed using a set of RILs derived from LR5. Twelve parameters associated with Na(+) and K(+) content in leaves, stems and roots were measured. Broad-sense heritability of these traits was ranged from 0.15 to 0.83 in control and from 0.14 to 0.61 in salt stress. Variation among RILs was dependent on line, treatment and line by treatment effect. We mapped 6 QTLs in control, 2 in salt stress and 5 for sensitivity index. No major QTL was identified indicating that tolerance to salt stress is governed by several genes with low effects. Detected QTL for leaf, stem and root traits did not share the same map locations, suggesting that genes controlling transport of Na(+) and K(+) may be different. The maximum of QTL was observed on chromosome 1, no QTL was detected on chromosomes 5 and 6.
Authors:
Soumaya Arraouadi; Mounawer Badri; Chedly Abdelly; Thierry Huguet; Mohamed Elarbi Aouani
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-8
Journal Detail:
Title:  Genomics     Volume:  -     ISSN:  1089-8646     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8800135     Medline TA:  Genomics     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Inc.
Affiliation:
Laboratory of Legumes, Centre of Biotechnology of Borj Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
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