Document Detail

Phenotype/genotype associations for yield and salt tolerance in a barley mapping population segregating for two dwarfing genes.
MedLine Citation:
PMID:  11971927     Owner:  NLM     Status:  MEDLINE    
Barley traits related to salt tolerance are mapped in a population segregating for a dwarfing gene associated with salt tolerance. Twelve quantitative trait loci (QTLs) were detected for seven seedling traits in doubled haploids from the spring barley cross Derkado x B83-12/21/5 when given saline treatment in hydroponics. The location of QTLs for seedling growth stage (leaf appearance rate), stem weight prior to elongation, and tiller number are reported for the first time. In addition, four QTLs were found for the mature plant traits grain nitrogen and plot yield. In total, seven QTLs are co-located with the dwarfing genes sdw1, on chromosome 3H, and ari-e.GP, on chromosome 5H, including seedling leaf response (SGa) to gibberellic acid (GA(3)). QTLs controlling the growth of leaves (GS2) on chromosomes 2H and 3H and emergence of tillers (TN2) and grain yield were independent of the dwarfing genes. Field trials were grown in eastern Scotland and England to estimate yield and grain composition. A genetic map was used to compare the positions of QTLs for seedling traits with the location of QTLs for the mature plant traits. The results are discussed in relation to the study of barley physiology and the location of genes for dwarf habit and responses to GA.
R P Ellis; B P Forster; D C Gordon; L L Handley; R P Keith; P Lawrence; R Meyer; W Powell; D Robinson; C M Scrimgeour; G Young; W T B Thomas
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of experimental botany     Volume:  53     ISSN:  0022-0957     ISO Abbreviation:  J. Exp. Bot.     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-04-24     Completed Date:  2002-07-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9882906     Medline TA:  J Exp Bot     Country:  England    
Other Details:
Languages:  eng     Pagination:  1163-76     Citation Subset:  IM    
Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, Scotland, UK.
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MeSH Terms
Adaptation, Physiological / drug effects,  genetics
Chromosome Mapping / methods*
Genetic Markers
Gibberellins / pharmacology*
Hordeum / drug effects,  genetics*,  growth & development
Plant Leaves / drug effects,  genetics,  growth & development
Plant Roots / drug effects,  genetics,  growth & development
Plant Shoots / drug effects,  genetics,  growth & development
Quantitative Trait, Heritable*
Salts / pharmacology
Reg. No./Substance:
0/Genetic Markers; 0/Gibberellins; 0/Salts; 77-06-5/gibberellic acid

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

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