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GrainGenes Reference Report: TAG-106-118

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Reference
TAG-106-118
Title
QTLs for grain carbon isotope discrimination in field-grown barley
Journal
Theoretical and Applied Genetics
Year
2002
Volume
106
Pages
118-126
Author
Teulat B
[ Show all 6 ]
Abstract
Summary: In several crops including cereals, carbon isotope discrimination (delta) has been associated with drought tolerance in terms of water-use efficiency and yield stability in drought-prone environments. By using a complete genetic map generated from 167 recombinant inbred lines from a cross between Tadmor and Er/Apm, QTLs associated with grain delta have been detected in barley grown in three Mediterranean field environments, two differing only in water availability. Ten QTLs were identified: one was specific to one environment, two presented interaction with the environment, six presented main effects across three or two environments and one presented both effects. Heading date did not contribute to the environment (E) and G x E effects acting on delta. Seasonal rainfall and the ratio of rainfall to evapo-transpiration made large contributions to the environmental effect, but their influence on G x E was weaker. Eight QTLs for delta co-located with QTLs for physiological traits related to plant water status and/or osmotic adjustment, and/or for agronomic traits previously measured on the same population. Some perspectives in terms of characterising drought tolerance are evoked
External Databases
Pubmed: 12582879
http://link.springer.de/link/service/journals/00122/contents/02/01028/
Map Data
Barley, TxE
Trait Study
Carbon isotope discrimination, irrigated, Diab04
Carbon isotope discrimination, rainfed, Diab04
Keyword
adjustment
[ Show all 35 ]

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