Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars
Wheat is increasingly used as a dual-purpose crop (for forage and grain production) worldwide. Plants encounter low temperatures in winter, which commonly results in sugar accumulation. High sugar levels might have a positive impact on forage digestibility, but may also lead to an increased risk of...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1228 http://www.mdpi.com/2077-0472/5/3/649/htm |
| _version_ | 1855034769143758848 |
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| author | Lorenzo, Maximo Assuero, Silvia Graciela Tognetti, Jorge Alberto |
| author_browse | Assuero, Silvia Graciela Lorenzo, Maximo Tognetti, Jorge Alberto |
| author_facet | Lorenzo, Maximo Assuero, Silvia Graciela Tognetti, Jorge Alberto |
| author_sort | Lorenzo, Maximo |
| collection | INTA Digital |
| description | Wheat is increasingly used as a dual-purpose crop (for forage and grain production) worldwide. Plants encounter low temperatures in winter, which commonly results in sugar accumulation. High sugar levels might have a positive impact on forage digestibility, but may also lead to an increased risk of bloat. We hypothesized that cultivars with a lower capacity to accumulate sugars when grown under cold conditions may have a lower bloat risk than higher sugar-accumulating genotypes, without showing significantly lower forage digestibility. This possibility was studied using two wheat cultivars with contrasting sugar accumulation at low temperature. A series of experiments with contrasting temperatures were performed in controlled-temperature field enclosures (three experiments) and growth chambers (two experiments). Plants were grown at either cool (8.1 °C–9.3 °C) or warm (15.7 °C–16.5 °C) conditions in field enclosures, and at either 5 °C or 25 °C in growth chambers. An additional treatment consisted of transferring plants from cool to warm conditions in the field enclosures and from 5 °C to 25 °C in the growth chambers. The plants in the field enclosure experiments were exposed to higher irradiances (i.e., 30%–100%) than those in the growth chambers. Our results show that (i) low temperatures led to an increased hemicellulose content, in parallel with sugar accumulation; (ii) low temperatures produced negligible changes in in vitro dry matter digestibility while leading to a higher in vitro rumen gas production, especially in the higher sugar-accumulating cultivar; (iii) transferring plants from cool to warm conditions led to a sharp decrease in in vitro rumen gas production in both cultivars; and (iv) light intensity (in contrast to temperature) appeared to have a lower impact on forage quality. |
| format | info:ar-repo/semantics/artículo |
| id | INTA1228 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA12282018-08-07T18:19:10Z Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars Lorenzo, Maximo Assuero, Silvia Graciela Tognetti, Jorge Alberto Trigo Triticum Aestivum Variedades Celulosa Asimilable Digestibilidad in Vitro Rumen Azucares Temperatura Bovinae Varieties Digestible Cellulose In Vtro Digestibility Sugars Temperature Wheat is increasingly used as a dual-purpose crop (for forage and grain production) worldwide. Plants encounter low temperatures in winter, which commonly results in sugar accumulation. High sugar levels might have a positive impact on forage digestibility, but may also lead to an increased risk of bloat. We hypothesized that cultivars with a lower capacity to accumulate sugars when grown under cold conditions may have a lower bloat risk than higher sugar-accumulating genotypes, without showing significantly lower forage digestibility. This possibility was studied using two wheat cultivars with contrasting sugar accumulation at low temperature. A series of experiments with contrasting temperatures were performed in controlled-temperature field enclosures (three experiments) and growth chambers (two experiments). Plants were grown at either cool (8.1 °C–9.3 °C) or warm (15.7 °C–16.5 °C) conditions in field enclosures, and at either 5 °C or 25 °C in growth chambers. An additional treatment consisted of transferring plants from cool to warm conditions in the field enclosures and from 5 °C to 25 °C in the growth chambers. The plants in the field enclosure experiments were exposed to higher irradiances (i.e., 30%–100%) than those in the growth chambers. Our results show that (i) low temperatures led to an increased hemicellulose content, in parallel with sugar accumulation; (ii) low temperatures produced negligible changes in in vitro dry matter digestibility while leading to a higher in vitro rumen gas production, especially in the higher sugar-accumulating cultivar; (iii) transferring plants from cool to warm conditions led to a sharp decrease in in vitro rumen gas production in both cultivars; and (iv) light intensity (in contrast to temperature) appeared to have a lower impact on forage quality. Fil: Lorenzo, Maximo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Assuero, Silvia Graciela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias. Laboratorio de Fisiología Vegetal; Argentina Fil: Tognetti, Jorge Alberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias. Laboratorio de Fisiología Vegetal; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina 2017-09-15T11:01:13Z 2017-09-15T11:01:13Z 2015-08-17 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1228 http://www.mdpi.com/2077-0472/5/3/649/htm 2077-0472 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 Agriculture / MDPI 5 (3) : 649-667. (2015) |
| spellingShingle | Trigo Triticum Aestivum Variedades Celulosa Asimilable Digestibilidad in Vitro Rumen Azucares Temperatura Bovinae Varieties Digestible Cellulose In Vtro Digestibility Sugars Temperature Lorenzo, Maximo Assuero, Silvia Graciela Tognetti, Jorge Alberto Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title | Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title_full | Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title_fullStr | Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title_full_unstemmed | Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title_short | Temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| title_sort | temperature impact on the forage quality of two wheat cultivars with contrasting capacity to accumulate sugars |
| topic | Trigo Triticum Aestivum Variedades Celulosa Asimilable Digestibilidad in Vitro Rumen Azucares Temperatura Bovinae Varieties Digestible Cellulose In Vtro Digestibility Sugars Temperature |
| url | http://hdl.handle.net/20.500.12123/1228 http://www.mdpi.com/2077-0472/5/3/649/htm |
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