Soybean response to CO2 and temperature increase

Authors

  • Alexandre Bryan Heinemann Brazilian Agricultural Research Corporation - EMBRAPA, Santo Antônio de Goiás
  • Durval Dourado Neto ESALQ. Universidade de São Paulo, Piracicaba
  • Gerrit Hoogenboom The University of Georgia. Griffin, Geórgia
  • Aline de Holanda Nunes Maia Brazilian Agricultural Research Corporation - EMBRAPA, Jaguariuna
  • Silvana Ohse Universidade Federal de Santa Catarina, Florianópolis
  • Paulo Augusto Manfron Universidade Federal de Santa Maria - RS

Abstract

This study was conducted to determine the effects and interactions of CO2 concentration and air temperature on five different stages (V4, R3, R5, R6 and R8) of soybean, Glycine max (L.) Merr. cv. Stonewal1, grown on controlled environment chambers. Day/night air temperatures of 20/15,25/20 and 30/25 °C were maintained in CO2 concentrations of 400 and 700 ppm. Plants were grown under constant irradiance and non-limiting supplies of water and mineral nutrients. Interactions between temperature and CO2 appeared after soybean development stage V4 for the above biomass plant analysis. The temperature has more influence over the development rate and flowering date than the CO2 concentration. Response to elevated CO2 was greater at lower temperatures.

Author Biographies

Alexandre Bryan Heinemann, Brazilian Agricultural Research Corporation - EMBRAPA, Santo Antônio de Goiás

Agronomist. Dr. Researcher - Embrapa Dairy Cattle, Midwest Center. Rod Goiânia Nova Veneza, km 12. alexbh@cnpaf.embrapa.br

Durval Dourado Neto, ESALQ. Universidade de São Paulo, Piracicaba

Agronomist. Dr. Associate Professor. Department of Plant Production. Sponsored by CNPq. dourado@esalq.usp.br

Gerrit Hoogenboom, The University of Georgia. Griffin, Geórgia

Hoogenboom - Agronomist. Prof. Dr. Department of Biological and Agricultural Engineering. 30223-1797. gerrit@griffin.peachnet.edu

Aline de Holanda Nunes Maia, Brazilian Agricultural Research Corporation - EMBRAPA, Jaguariuna

Agronomist. Dr. Researcher at Embrapa Environment. Sponsored by CNPq. aline@esalq.usp.br

Silvana Ohse, Universidade Federal de Santa Catarina, Florianópolis

Agronomist. Dr. Researcher / FAPEU. ohse@hotmail.com

Paulo Augusto Manfron, Universidade Federal de Santa Maria - RS

Agronomist. Dr. Professor. Sponsored by CNPq. manfronp@esalq.usp.br

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Published

2003-01-01

Issue

Vol. 32 (2003)

Section

Artigos

License

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