Document Detail

Seed and agronomic QTL in low linolenic acid, lipoxygenase-free soybean (Glycine max (L.) Merrill) germplasm.
MedLine Citation:
PMID:  17426766     Owner:  NLM     Status:  MEDLINE    
Linolenic acid and seed lipoxygenases are associated with off flavours in soybean products. F5 recombinant inbred lines (RILs) from a cross between a low linolenic acid line (RG10) and a seed lipoxygenase-free line (OX948) were genotyped for simple sequence repeats (SSR), random amplified polymorphic DNA (RAPD), sequence-tagged sites (STS), and cleaved amplified polymorphic sequence (CAPS) markers and evaluated for seed and agronomic traits at 3 Ontario locations in 2 years. One hundred twenty markers covering 1247.5 cM were mapped to 18 linkage groups (LGs) in the soybean composite genetic map. Seed lipoxygenases L-1 and L-2 mapped as single major genes to the same location on LG G13-F. L-3 mapped to LG G11-E. This is the first report of a map position for L-3. A major quantitative trait locus (QTL) associated with reduced linolenic acid content was identified on LG G3-B2. QTLs for 12 additional seed and agronomic traits were detected. Linolenic acid content, linoleic acid content, yield, seed mass, protein content, and plant height QTL were present in at least 4 of 6 environments. Three to 8 QTLs per trait were detected that accounted for up to 78% of total variation. Linolenic acid and lipoxygenase loci did not overlap yield QTL, suggesting that it should be possible to develop high-yielding lines resistant to oxidative degradation by marker-assisted selection (MAS).
Yarmilla Reinprecht; Vaino W Poysa; Kangfu Yu; Istvan Rajcan; Gary R Ablett; K Peter Pauls
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Genome / National Research Council Canada = Génome / Conseil national de recherches Canada     Volume:  49     ISSN:  0831-2796     ISO Abbreviation:  Genome     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2007-04-11     Completed Date:  2007-05-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8704544     Medline TA:  Genome     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  1510-27     Citation Subset:  IM    
Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada.
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MeSH Terms
Chromosome Mapping
Chromosomes, Plant
Crosses, Genetic
Fatty Acids / genetics
Flowering Tops / genetics
Lipoxygenase / genetics*
Minisatellite Repeats
Plant Oils / analysis
Plants, Genetically Modified
Quantitative Trait Loci*
Seeds / genetics*,  growth & development
Soybeans / genetics*,  growth & development
alpha-Linolenic Acid / analysis*,  genetics
Reg. No./Substance:
0/Fatty Acids; 0/Plant Oils; 463-40-1/alpha-Linolenic Acid; EC

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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