Effects of cyproconazole, azoxystrobin and mineral oil on soybean leaf anatomy

Authors

  • Paulo Roberto de Camargo e Castro USP – Campus “Luiz de Queiroz
  • Maria Bernadete Gonçalves Martins Unesp/ Campus do Litoral Paulista
  • Raphael Gonçalves Martins USP- Universidade de São Paulo, Campus "Luiz de Queiroz", Piracicaba (SP)
  • Isabella Romitelli Unesp/ Campus do Litoral Paulista

Keywords:

Asian rust, azoxystrobin, cyproconazole, mineral oil

Abstract

A fungicide composed of a triazole (cyproconazole), a strobilurin (azoxystrobin) and a mineral oil (nimbus) is used for disease control, Asian Rust mainly, currently considered one of the major soybean diseases in Brazil. With the purpose of studying the effect of the fungicide and its constituents on histological characteristics of soybean (Glycine max cv. Pintado) leaves, the fungicides plus mineral oil, cyproconazole, azoxystrobin plus mineral oil and just mineral oil, were applied at R1 stage (anthesis), R3 and R5 stages. Fourteen days after the last application, central leaflet of each trifoliate leaf were harvested from five plants. Leaf anatomy variables were measured in four leaves collected in each of five plants per treatment. Histological analysis showed that the fungicide plus mineral oil increased leaf blade thickness, midrib, xylem, phloem and the width of the midrib. Azoxystrobin plus mineral oil increased the thickness of midrib, xylem, phloem and the width of the midrib. Cyproconazole increased the thickness of xylem and phloem. Finally, mineral oil reduced the thickness of leaf blade and midrib.

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Author Biographies

Paulo Roberto de Camargo e Castro, USP – Campus “Luiz de Queiroz

 


Maria Bernadete Gonçalves Martins, Unesp/ Campus do Litoral Paulista

Botânica Aplicada

Raphael Gonçalves Martins, USP- Universidade de São Paulo, Campus "Luiz de Queiroz", Piracicaba (SP)

Departamento de Ciências Biológicas

Isabella Romitelli, Unesp/ Campus do Litoral Paulista

Botânica Aplicada

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Published

2013-05-31

How to Cite

Castro, P. R. de C. e, Martins, M. B. G., Martins, R. G., & Romitelli, I. (2013). Effects of cyproconazole, azoxystrobin and mineral oil on soybean leaf anatomy. Agrarian Journal, 6(20), 154–160. Retrieved from https://ojs.ufgd.edu.br/agrarian/article/view/1791

Issue

Vol. 6 No. 20 (2013)

Section

Article - Plant Breeding

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