Yield, growth and grain nitrogen response to elevated CO2 in six lentil (Lens culinaris) cultivars grown under Free Air CO2 Enrichment (FACE) in a semi-arid environment

dc.contributor.authorBourgault, Maryse
dc.contributor.authorBrand, J.
dc.contributor.authorTausz-Posch, Sabine
dc.contributor.authorArmstrong, R. D.
dc.contributor.authorO'Leary, G.L.
dc.contributor.authorFitzgerald, Glenn J.
dc.contributor.authorTausz, Michael
dc.date.accessioned2017-12-20T21:49:21Z
dc.date.available2017-12-20T21:49:21Z
dc.date.issued2017-07
dc.description.abstractAtmospheric CO2 concentrations ([CO2]) are predicted to increase from current levels of about 400 ppm to reach 550 ppm by 2050. The direct benefits of elevated [CO2] (e[CO2]) to plant growth appear to be greater under low rainfall conditions, but there are few field (Free Air CO2 Enrichment or FACE) experimental set-ups that directly address semi-arid conditions. The objectives of this study were to investigate the following research questions: 1) What are the effects of e[CO2] on the growth and grain yield of lentil (Lens culinaris) grown under semi-arid conditions under FACE? 2) Does e[CO2] decrease grain nitrogen in lentil? and 3) Is there genotypic variability in the response to e[CO2] in lentil cultivars? Elevated [CO2] increased yields by approximately 0.5 t ha−1 (relative increase ranging from 18 to 138%) by increasing both biomass accumulation (by 32%) and the harvest index (by up to 60%). However, the relative response of grain yield to e[CO2] was not consistently greater under dry conditions and might depend on water availability post-flowering. Grain nitrogen concentration was significantly reduced by e[CO2] under the conditions of this experiment. No differences were found between the cultivars selected in the response to elevated [CO2] for grain yield or any other parameters observed despite well expressed genotypic variability in many traits of interest. Biomass accumulation from flowering to maturity was considerably increased by elevated [CO2] (a 50% increase) which suggests that the indeterminate growth habit of lentils provides vegetative sinks in addition to reproductive sinks during the grain-filling period.en_US
dc.identifier.citationBourgault, Maryse, J. Brand, S. Tausz-Posch, R.D. Armstrong, G.L. O'Leary, G.J. Fitzgerald, and M. Tausz. "Yield, growth and grain nitrogen response to elevated CO2 in six lentil (Lens culinaris) cultivars grown under Free Air CO2 Enrichment (FACE) in a semi-arid environment." European Journal of Agronomy 87 (Juy 2017): 50-58. DOI: 10.1016/j.eja.2017.05.003.en_US
dc.identifier.issn1161-0301
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/14099
dc.titleYield, growth and grain nitrogen response to elevated CO2 in six lentil (Lens culinaris) cultivars grown under Free Air CO2 Enrichment (FACE) in a semi-arid environmenten_US
mus.citation.extentfirstpage50en_US
mus.citation.extentlastpage58en_US
mus.citation.journaltitleEuropean Journal of Agronomyen_US
mus.citation.volume87en_US
mus.contributor.orcidBourgault, Maryse|0000-0001-7756-7353en_US
mus.data.thumbpage4en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1016/j.eja.2017.05.003en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentResearch Centers.en_US
mus.relation.universityMontana State University - Bozemanen_US

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