Whole plant open chamber to measure gas exchange on herbaceous plant
Much of our understanding about CO2 and H2O gas exchange in plants has been gained from studies at leaf level. Extrapolation of results to whole plant is difficult and not always accurate. In order to overcome this limitation, a chamber was designed to measure gas exchange at the whole plant level....
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1389 http://www.scielo.cl/pdf/chiljar/v76n1/13.pdf http://dx.doi.org/10.4067/S0718-58392016000100013 |
| _version_ | 1855482879793954816 |
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| author | Ferrari, Florencia Parera, Carlos Alberto Passera, Carlos Bernardo |
| author_browse | Ferrari, Florencia Parera, Carlos Alberto Passera, Carlos Bernardo |
| author_facet | Ferrari, Florencia Parera, Carlos Alberto Passera, Carlos Bernardo |
| author_sort | Ferrari, Florencia |
| collection | INTA Digital |
| description | Much of our understanding about CO2 and H2O gas exchange in plants has been gained from studies at leaf level. Extrapolation of results to whole plant is difficult and not always accurate. In order to overcome this limitation, a chamber was designed to measure gas exchange at the whole plant level. The chamber developed in this work consisted on an acrylic cylinder 0.70 m high and 0.60 m wide. An incorporated blower was used to circulate air through the chamber and plant canopy from the bottom inlet upwards to the outlet tube providing a maximum flow of 0.072 m3 s-1. Air CO2 and water concentration were
monitored with an infrared gas analyzer and temperature gradients were measured periodically with sensors. Air flow rates inside the chamber were 0.007, 0.012, 0.022, 0.047, and 0.072 m3 s-1. A comparative study showed that 0.022 or 0.047 m3 s-1 air flow rates did not modify substantially the natural environment within the chamber; measurements are close to real and exterior ones; temperature increased below 4 °C; photosynthetically active radiation (PAR) was reduced by 5%; and photosynthesis and evapotranspiration showed mean values with nonsignificant variations (22 ± 3.8 μmol CO2 m-2 s-1, and 15 ± 4.0 mmol H2O m-2 s-1, respectively). This chamber could be a useful tool to measure gas exchange of whole plants in herbaceous species under conditions of high evapotranspiration and for extended periods of time. |
| format | Artículo |
| id | INTA1389 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA13892018-01-19T18:32:06Z Whole plant open chamber to measure gas exchange on herbaceous plant Ferrari, Florencia Parera, Carlos Alberto Passera, Carlos Bernardo Dióxido de Carbono Evapotranspiración Temperatura Intercambio de Gases Plantas Herbáceas Carbon Dioxide Evapotranspiration Temperature Gas Exchange Herbaceous Plants Much of our understanding about CO2 and H2O gas exchange in plants has been gained from studies at leaf level. Extrapolation of results to whole plant is difficult and not always accurate. In order to overcome this limitation, a chamber was designed to measure gas exchange at the whole plant level. The chamber developed in this work consisted on an acrylic cylinder 0.70 m high and 0.60 m wide. An incorporated blower was used to circulate air through the chamber and plant canopy from the bottom inlet upwards to the outlet tube providing a maximum flow of 0.072 m3 s-1. Air CO2 and water concentration were monitored with an infrared gas analyzer and temperature gradients were measured periodically with sensors. Air flow rates inside the chamber were 0.007, 0.012, 0.022, 0.047, and 0.072 m3 s-1. A comparative study showed that 0.022 or 0.047 m3 s-1 air flow rates did not modify substantially the natural environment within the chamber; measurements are close to real and exterior ones; temperature increased below 4 °C; photosynthetically active radiation (PAR) was reduced by 5%; and photosynthesis and evapotranspiration showed mean values with nonsignificant variations (22 ± 3.8 μmol CO2 m-2 s-1, and 15 ± 4.0 mmol H2O m-2 s-1, respectively). This chamber could be a useful tool to measure gas exchange of whole plants in herbaceous species under conditions of high evapotranspiration and for extended periods of time. EEA Mendoza Fil: Ferrari, Florencia Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Parera, Carlos Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Passera, Carlos Bernardo. Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias; Argentina 2017-10-03T14:18:16Z 2017-10-03T14:18:16Z 2016 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:ar-repo/semantics/artículo http://hdl.handle.net/20.500.12123/1389 http://www.scielo.cl/pdf/chiljar/v76n1/13.pdf 0718-5839 (Online) http://dx.doi.org/10.4067/S0718-58392016000100013 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Chilean journal of agricultural research 76 (1) : 93-99. (Mar. 2016) |
| spellingShingle | Dióxido de Carbono Evapotranspiración Temperatura Intercambio de Gases Plantas Herbáceas Carbon Dioxide Evapotranspiration Temperature Gas Exchange Herbaceous Plants Ferrari, Florencia Parera, Carlos Alberto Passera, Carlos Bernardo Whole plant open chamber to measure gas exchange on herbaceous plant |
| title | Whole plant open chamber to measure gas exchange on herbaceous plant |
| title_full | Whole plant open chamber to measure gas exchange on herbaceous plant |
| title_fullStr | Whole plant open chamber to measure gas exchange on herbaceous plant |
| title_full_unstemmed | Whole plant open chamber to measure gas exchange on herbaceous plant |
| title_short | Whole plant open chamber to measure gas exchange on herbaceous plant |
| title_sort | whole plant open chamber to measure gas exchange on herbaceous plant |
| topic | Dióxido de Carbono Evapotranspiración Temperatura Intercambio de Gases Plantas Herbáceas Carbon Dioxide Evapotranspiration Temperature Gas Exchange Herbaceous Plants |
| url | http://hdl.handle.net/20.500.12123/1389 http://www.scielo.cl/pdf/chiljar/v76n1/13.pdf http://dx.doi.org/10.4067/S0718-58392016000100013 |
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