Agritrop
Home

Increase in night temperature in rice enhances respiration rate without significant impact on biomass accumulation

Peraudeau Sébastien, Roques Sandrine, Quiñones Cherryl O., Fabre Denis, Van Rie Jeroen, Ouwerkerk Pieter B.F., Jagadish Krishna S.V., Dingkuhn Michaël, Lafarge Tanguy. 2015. Increase in night temperature in rice enhances respiration rate without significant impact on biomass accumulation. Field Crops Research, 171 : pp. 65-78.

Journal article ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
document_575241.pdf

Télécharger (1MB)

Quartile : Q1, Sujet : AGRONOMY

Abstract : Night temperature (NT) increases faster than day temperature with global warming and this may have strong implications for crop yield. One of the assumptions is the increase in night respiration and thus the increase in carbon losses over time. Some rice cultivars (indica, aus and japonica types) were grown in the field in the Philippines and in heated greenhouses in Montpellier, France, to quantify the response of respiration to increased NT and its implication at crop level. Increased NT by 3.8 and 5.4 °C over the whole crop cycle in two greenhouse experiments and by 1.9 °C in the field from 33 days after transplanting up to maturity using a free-air-controlled enhancement increased night respiration rate significantly. Overall, the cost in CH2O of night respiration over crop duration was 17 to 20% (field) and 8 to 18% (greenhouse) of the potential shoot dry matter (including that lost by respiration). Additional respiratory burden due to increased NT was only 1 to 7% of the potential shoot dry matter at maturity, and was not associated with significant loss in additional dry matter. The absence of any dry matter reduction with increased NT within indica cultivars questions the assumptions of recent papers. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza, Taux de respiration, Respiration cellulaire, Température, Rythme circadien, Biomasse, Rendement des cultures, Phénologie, Changement climatique, adaptation aux changements climatiques, Feuille, Développement biologique, Croissance, Facteur climatique, Modèle de simulation, Variété

Mots-clés géographiques Agrovoc : Philippines, Languedoc-Roussillon

Classification Agris : F62 - Plant physiology - Growth and development
U10 - Mathematical and statistical methods
P40 - Meteorology and climatology
F01 - Crop husbandry

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Peraudeau Sébastien, CIRAD-BIOS-UMR AGAP (FRA)
  • Roques Sandrine, CIRAD-BIOS-UMR AGAP (FRA)
  • Quiñones Cherryl O., IRRI (PHL)
  • Fabre Denis, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-6222-2587
  • Van Rie Jeroen, Bayer (BEL)
  • Ouwerkerk Pieter B.F., Bayer (BEL)
  • Jagadish Krishna S.V., IRRI (PHL)
  • Dingkuhn Michaël, CIRAD-BIOS-UMR AGAP (PHL)
  • Lafarge Tanguy, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/575241/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2020-10-18 ]