Photosynthetic activity of young Ricinus communis L. plants under conditions of flooded soil

Authors

  • Davi Silva Dalberto Universidade Federal do Amapá
  • Emanuela Garbin Martinazzo Universidade Federal do Rio Grande
  • Cristina Moll Hüther Universidade Federal Fluminense
  • Douglas Antônio Posso Universidade Federal de Pelotas
  • Marcos Antonio Bacarin Universidade Federal de Pelotas

DOI:

https://doi.org/10.5433/1679-0359.2017v38n1p73

Keywords:

Photosynthetic apparatus, Castor beans, JIP Test.

Abstract

Soil flooding is a stress condition that causes changes in hydric relationships and in the metabolism of crops, thereby affecting their productivity. To evaluate the effects of soil flooding on the chlorophyll a fluorescence transient, as well as gas exchange and Ricinus communis growth, young plants of the ‘AL Guarany 2002’ and ‘IAC Guarani’ cultivars, grown in a greenhouse, were subjected to flood conditions by maintaining a layer of water 2-3 cm above the soil. The stressed plants showed drastic reduction in net CO2 assimilation and growth variables. There was, however, an increase in performance index (PIABS e PITOTAL) at different moments of stress between the two cultivars. In general, R. communis plants possess mechanisms to protect the electron transport chain during a period of stress, without causing damage and reducing functionality. However, this is not enough to maintain photosynthetic activity owing to the decrease in stomatal conductance and intrinsic carboxylation efficiency, which affects biomass accumulation in stressed plants. In summary, this study found that the ‘AL Guarany 2002’ was found to be more sensitive to stress than the ‘IAC Guarani’ was.

Downloads

Download data is not yet available.

Author Biographies

Davi Silva Dalberto, Universidade Federal do Amapá

Prof. Dr., Biólogo, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, UNIFAP, Amapá, Brasil.

Emanuela Garbin Martinazzo, Universidade Federal do Rio Grande

Profª Drª, Bióloga, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Campus Carreiros, Rio Grande, Rio Grande do Sul, Brasil.

Cristina Moll Hüther, Universidade Federal Fluminense

Drª Pesquisadora, Bióloga, Programa de Pós-Graduação em Engenharia de Biossistemas, Universidade Federal Fluminense, UFF, Niterói, Rio de Janeiro, Brasil.

Douglas Antônio Posso, Universidade Federal de Pelotas

Discente, Curso de Mestrado em Fisiologia Vegetal, Eng. Agronômo, Departamento de Botânica, Instituto de Biologia, Universidade Federal de Pelotas, UFPEL, Campus Capão do Leão, Pelotas, RS, Brasil.

Marcos Antonio Bacarin, Universidade Federal de Pelotas

Prof. Dr., Engº Agrº, Departamento de Botânica, Instituto de Biologia, UFPEL, Campus Capão do Leão, Pelotas, RS, Brasil.

Downloads

Published

2017-03-02

How to Cite

Dalberto, D. S., Martinazzo, E. G., Hüther, C. M., Posso, D. A., & Bacarin, M. A. (2017). Photosynthetic activity of young Ricinus communis L. plants under conditions of flooded soil. Semina: Ciências Agrárias, 38(1), 73–84. https://doi.org/10.5433/1679-0359.2017v38n1p73

Issue

Section

Articles

Most read articles by the same author(s)

Similar Articles

You may also start an advanced similarity search for this article.