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.author | Bourgault, Maryse | |
dc.contributor.author | Brand, J. | |
dc.contributor.author | Tausz-Posch, Sabine | |
dc.contributor.author | Armstrong, R. D. | |
dc.contributor.author | O'Leary, G.L. | |
dc.contributor.author | Fitzgerald, Glenn J. | |
dc.contributor.author | Tausz, Michael | |
dc.date.accessioned | 2017-12-20T21:49:21Z | |
dc.date.available | 2017-12-20T21:49:21Z | |
dc.date.issued | 2017-07 | |
dc.description.abstract | Atmospheric 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.citation | Bourgault, 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.issn | 1161-0301 | |
dc.identifier.uri | https://scholarworks.montana.edu/handle/1/14099 | |
dc.title | 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 | en_US |
mus.citation.extentfirstpage | 50 | en_US |
mus.citation.extentlastpage | 58 | en_US |
mus.citation.journaltitle | European Journal of Agronomy | en_US |
mus.citation.volume | 87 | en_US |
mus.contributor.orcid | Bourgault, Maryse|0000-0001-7756-7353 | en_US |
mus.data.thumbpage | 4 | en_US |
mus.identifier.category | Life Sciences & Earth Sciences | en_US |
mus.identifier.doi | 10.1016/j.eja.2017.05.003 | en_US |
mus.relation.college | College of Agriculture | en_US |
mus.relation.department | Research Centers. | en_US |
mus.relation.university | Montana State University - Bozeman | en_US |
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