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Variability in mesophyll conductance between barley genotypes, and effects on transpiration efficiency and carbon isotope discrimination

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Barbour, Margaret; Warren, Charles; Forrester, Guy; Brown, Hamish; Farquhar, Graham

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Leaf internal, or mesophyll, conductance to CO2 (gm) is a significant and variable limitation of photosynthesis that also affects leaf transpiration efficiency (TE). Genotypic variation in gm and the effect of gm on TE were assessed in six barley genotypes (four Hordeum vulgare and two H. bulbosum). Significant variation in gm was found between genotypes, and was correlated with photosynthetic rate. The genotype with the highest gm also had the highest TE and the lowest carbon isotope...[Show more]

dc.contributor.authorBarbour, Margaret
dc.contributor.authorWarren, Charles
dc.contributor.authorForrester, Guy
dc.contributor.authorBrown, Hamish
dc.contributor.authorFarquhar, Graham
dc.date.accessioned2015-12-08T22:30:23Z
dc.identifier.issn0140-7791
dc.identifier.urihttp://hdl.handle.net/1885/34414
dc.description.abstractLeaf internal, or mesophyll, conductance to CO2 (gm) is a significant and variable limitation of photosynthesis that also affects leaf transpiration efficiency (TE). Genotypic variation in gm and the effect of gm on TE were assessed in six barley genotypes (four Hordeum vulgare and two H. bulbosum). Significant variation in gm was found between genotypes, and was correlated with photosynthetic rate. The genotype with the highest gm also had the highest TE and the lowest carbon isotope discrimination as recorded in leaf tissue (Δp). These results suggest gm has unexplored potential to provide TE improvement within crop breeding programmes.
dc.publisherBlackwell Publishing Ltd
dc.sourcePlant Cell and Environment
dc.subjectKeywords: carbon; barley; carbon isotope; genetic variation; genotype; photosynthesis; stomatal conductance; water use efficiency; article; barley; comparative study; evapotranspiration; genetic variability; genetics; genotype; metabolism; photosynthesis; plant lea Hordeum vulgare; Leaf internal conductance; Photosynthesis; Stomatal conductance; Water use efficiency
dc.titleVariability in mesophyll conductance between barley genotypes, and effects on transpiration efficiency and carbon isotope discrimination
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume33
dc.date.issued2010
local.identifier.absfor060705 - Plant Physiology
local.identifier.ariespublicationf2965xPUB113
local.type.statusPublished Version
local.contributor.affiliationBarbour, Margaret, University of Sydney
local.contributor.affiliationWarren, Charles, University of Sydney
local.contributor.affiliationFarquhar, Graham, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationForrester, Guy, Landcare Research
local.contributor.affiliationBrown , Hamish , New Zealand Institute for Plant and Food Research
local.description.embargo2037-12-31
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage1176
local.bibliographicCitation.lastpage1185
local.identifier.doi10.1111/j.1365-3040.2010.02138.x
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2016-02-24T08:09:21Z
local.identifier.scopusID2-s2.0-77954747235
local.identifier.thomsonID000278624200011
CollectionsANU Research Publications

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