Relationship between leaf structure and carbon isotope discrimination in field grown barley

cg.contactjaraus@ub.eduen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Barcelona - UNI-Ben_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.date.embargo-end-dateTimelessen_US
cg.identifier.doihttps://dx.doi.org/10.1016/S0981-9428(99)80007-2en_US
cg.isijournalISI Journalen_US
cg.issn0981-9428en_US
cg.issue12en_US
cg.journalPlant Physiology and Biochemistryen_US
cg.subject.agrovochordeum vulgareen_US
cg.subject.agrovocnitrogen contenten_US
cg.subject.agrovocBarleyen_US
cg.volume36en_US
dc.contributorAraus, José Luisen_US
dc.contributorCeccarelli, Salvatoreen_US
dc.contributorGrando, Stefaniaen_US
dc.contributorHazzam, Hanien_US
dc.creatorBort, Jordien_US
dc.date.accessioned2021-04-08T16:35:52Z
dc.date.available2021-04-08T16:35:52Z
dc.description.abstractFor C-3 plants, discrimination against C-13 (Delta) is an integrated indicator of the ratio of intercellular to atmospheric partial pressure of CO2 (p(i)/p(a)) and therefore of the water use efficiency (WUE). Changes in p(i)/p(a), and thus in Delta, can arise from changes in the balance between leaf stomatal conductance and photosynthetic capacity. If the intrinsic photosynthetic capacity of leaves is increased, p(i)/p(a) and Delta could decrease and WUE could be improved, without compromising potential yield. A set of F-6 lines of two-row barley derived from two parents, Tadmor and WI 2291, with contrasting leaf chlorophyll content, was cultivated in Tel Hadya (the headquarters of ICARDA), in North-west Syria. without apparent drought stress. Here, we examine the relationship between Delta and different leaf structural indicators of photosynthetic capacity in barley (Hordeum vulgare L.). Total chlorophyll content (SPAD) was measured in penultimate leaf blades, around 2 weeks before anthesis, with a portable meter in the field. Further, the specific leaf dry weight (SLDW) and the nitrogen content and carbon isotope discrimination (Delta) was measured in the same leaves. The SLDW was positively correlated with both nitrogen (SLNW) and chlorophyll (SPAD) content per unit leaf area, which in turn were negatively correlated with Delta of leaf dry matter (Delta-DW). The Delta of the water soluble fraction (Delta-SF) from the same leaves was further analyzed to provide information on the discrimination of the current photoassimilates, therefore ignoring the photoassimilates coming from other parts of the plant during leaf development. Correlation between Delta-SF and either SLDW or SLNW was consistently higher than correlations with Delta-DW. The leaf parameter best correlated with Delta, of either total dry matter or the soluble fraction, was SLDW, indicating that genotypes with thicker and/or more compact leaves have lower Delta. The results suggest that SLDW and SPAD measurements can be used as a single, rapid surrogate for Delta in barley.en_US
dc.formatPDFen_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationJordi Bort, José Luis Araus, Salvatore Ceccarelli, Stefania Grando, Hani Hazzam. (30/4/1999). Relationship between leaf structure and carbon isotope discrimination in field grown barley. Plant Physiology and Biochemistry, 36 (12), pp. 889-897.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/12839
dc.languageenen_US
dc.publisherElsevier (12 months)en_US
dc.sourcePlant Physiology and Biochemistry;36,(1999) Pagination 889-897en_US
dc.subjectchlorophyll contenten_US
dc.subjectcarbon isotope discriminationen_US
dc.subjectleaf structureen_US
dc.subjectspecific leaf dry weighten_US
dc.titleRelationship between leaf structure and carbon isotope discrimination in field grown barleyen_US
dc.typeJournal Articleen_US
dcterms.available1999-04-30en_US
dcterms.extent889-897en_US
dcterms.issued1998-12-01en_US
mel.impact-factor3.720en_US

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