Behavior of Sethoxydim Alone or in Combination with Turnip Oils on Chlorophyll Fluorescence Parameter

  • Hossein HAMMAMI Department of Agronomy, College of Agriculture, Ferdowsi University of Mashhad, Mashhad (IR)
  • Mohammad Hassan RASHED MOHASSEL Department of Agronomy, College of Agriculture, Ferdowsi University of Mashhad, Mashhad (IR)
  • Mehdi PARSA Department of Agronomy, College of Agriculture, Ferdowsi University of Mashhad, Mashhad (IR)
  • Mohammad BANNAYAN-AVAL Department of Agronomy, College of Agriculture, Ferdowsi University of Mashhad, Mashhad (IR)
  • Eskandar ZAND Department of Weed Research, Plant Protection Research Institute, Tehran (IR)
Keywords: kautsky curve; sethoxydim; turnip oil; wild oat

Abstract

Sethoxydim is an acetyl-coenzyme A carboxylase (ACCase) inhibitor that changed the shape of the chlorophyll fluorescence curve (kautsky curve) in wild oat (Avena ludoviciana Durieu.) in greenhouse experiment. This experiment was conducted as completely randomized factorial design with three replications at the College of Agriculture, Ferdowsi University of Mashhad, Iran, during 2012. Results of this study revealed that sethoxydim only and plus emulsifiable turnip oil changed the shape of the chlorophyll fluorescence curve (kautsky curve) 7 days after spraying. Sethoxydim plus emulsifiable turnip oil changed the shape of the kautsky curve more than for sethoxydim only. We found that in our study the fv/fm (maximum quantum efficiency) was closely linked to the fresh and dry weight dose-response. Sethoxydim plus emulsifiable turnip oil proved more rapidly effect on fv/fm in comparison with sethoxydim only. The fresh and dry weight dose-response relationship with fv/fm showed a similar behavior. This study revealed a good relation between fresh and dry weight according with values of 28 DAS and fv/fm 7 DAS. In general, the findings of this study revealed that Fv/Fm is a good parameter for evaluating effect of sethoxydim little time after spraying. Also, this research showed that 4 folds more time for classical screening methods comparing to chlorophyll fluorescence method. Thereupon, classical screening methods may be replaced by chlorophyll fluorescence method in future.

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Published
2014-03-12
How to Cite
HAMMAMI, H., RASHED MOHASSEL, M. H., PARSA, M., BANNAYAN-AVAL, M., & ZAND, E. (2014). Behavior of Sethoxydim Alone or in Combination with Turnip Oils on Chlorophyll Fluorescence Parameter. Notulae Scientia Biologicae, 6(1), 112-118. https://doi.org/10.15835/nsb619222
Section
Research articles
CITATION
DOI: 10.15835/nsb619222

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