Cereal Research Communications

, Volume 37, Issue 4, pp 513–519 | Cite as

Effect of a strobilurin-class fungicide on water use in synthetic bread wheat genotypes grown under increasing water deficit conditions

  • M. N. InagakiEmail author
  • M. Mori
  • M. M. Nachit
Open Access


Three synthetic bread wheat genotypes and their parental cultivar Cham 6 were used to examine the effects of a strobilurin-class fungicide pyraclostrobin on leaf temperature, root water uptake and grain yield under increasing water deficit conditions. Wheat plants of Cham 6 treated with the pyraclostrobin at the booting stage showed a rapidly increased leaf temperature as compared with the gradually increased leaf temperature of the untreated plants. The final temperature reached, however, was lower for the pyraclostrobin treated plants than the untreated. Potted soil of the treated wheat plants also showed higher water contents than the untreated potted soil, suggesting delay of plant water uptake by pyraclostrobin treatment. A variation in water uptake by roots was also found between the four wheat genotypes examined. Daily water uptake was depressed after the pyraclostrobin treatment in all four wheat genotypes. Grain yields were slightly increased by the pyraclostrobin treatment in field trials under controlled water supply whereas no significant differences were detected in soil water content between treatments. The increase in grain yield by pyraclostrobin treatment might be dependent on the different water uptake of the wheat genotypes. These results suggest that foliage treatment of pyraclostrobin fungicide on wheat delays root water uptake, resulting in postponement of soil dehydration, which contributes to a slight increase of grain yield in some wheat genotypes in the field under water deficit conditions.


synthetic wheat pyraclostrobin strobilurin leaf temperature water use water uptake drought 


  1. Bartlett, D.W., Clough, J.M., Godwin, J.R., Hall, A.A., Hamer, M., Parr-Dobrzanski, B. 2002. The strobilurin fungicide. Pest Manage. Sci. 58:649–662.CrossRefGoogle Scholar
  2. Del Blanco, I.A., Rajaram, S., Kronstad, W.E. 2001. Agronomic potentials of synthetic hexaploid wheat-derived populations. Crop Sci. 41:670–676.CrossRefGoogle Scholar
  3. Dimmock, J.P.R.E., Gooding, M.J. 2002. The effects of fungicides on rate and duration of grain filling in wheat in relation to maintenance of flag leaf area. J. Agri. Sci. 138:1–16.CrossRefGoogle Scholar
  4. Dreccer, M.F., Borgognone, M.G., Ogbonnaya, F.C., Trethowan, R.M., Winter, B. 2007. CIMMYT-selected derived synthetic bread wheat for rainfed environments: yield evaluation in Mexico. Field Crops Res. 100:218–228.CrossRefGoogle Scholar
  5. Gooding, M.J., Dimmock, J.P.R.E., France, J., Jones, S.A. 2000. Green leaf area decline of wheat flag leaves: the influence of fungicides and relationships with mean grain weight and grain yield. Ann. Appl. Biol. 136:77–87.CrossRefGoogle Scholar
  6. Inagaki M.N., Nachit, M.M. 2008. Visual monitoring of water deficit stress using infra-red thermography in wheat, In: Appels, R. et al. (eds), Proceedings of the 11th International Wheat Genetics Symposium 2008, pp.181, Sydney University Press, Brisbane. (URL: Scholar
  7. Inagaki, M.N., Valkoun, J., Nachit, M.M. 2007. Effect of soil water deficit on grain yield in synthetic bread wheat derivatives. Cereal Res. Commun. 35:1603–1608.CrossRefGoogle Scholar
  8. Kleven, S., Dean, G., Hacking, C., Davidson, J. 2003. Evaluation of a new class of fungicides on grain yield in wheat and barley. In: Proceedings of the 11th Australian Agronomy Conference.2003, Australian Society of Agronomy, Victoria. (URL: Scholar
  9. Köhle, H., Grossmann, K., Jabs, T., Gerhard, M., Kaiser, W., Glaab, J., Conrath, U., Seehaus, K., Herms, S. 2002. Physiological effects of the strobilurin fungicide F 500 on plants. In: Dehne, H.-W. et al. (eds), Modern fungicides and antifungal compounds III, Mann GmbH & Co., Bonn, pp. 61–74.Google Scholar
  10. Nason, N.A., Farrar, J., Bartlett, D. 2007. Strobilurin fungicides induce changes in photosynthetic gas exchange that do not improve water use efficiency of plants grown under conditions of water stress. Pest Manage. Sci. 63:1191–1200.CrossRefGoogle Scholar
  11. Olivares-Villegas, J.J., Reynolds, M.P., McDonald, G.K. 2007. Drought-adaptive attributes in the Seri/Babax hexaploid wheat population. Funct. Plant Biol. 34:189–203.CrossRefGoogle Scholar
  12. Reynolds, M., Dreccer, F., Trethowan, R. 2007. Drought-adaptive traits derived from wheat wild relatives and landraces. J. Exp. Bot. 58: 177–186.CrossRefGoogle Scholar
  13. Richards, R.A., Rebetzke, G.J., Condon, A.G., van Herwaadenet, A.F. 2002. Breeding opportunities for increasing the efficiency of water use and crop yield in temperate cereals. Crop Sci. 42:111–121.CrossRefGoogle Scholar
  14. Ryan, J., Masri, S., Garabet, S., Diekmann, J., Habib, H. 1997. Soils of ICARDA’s agricultural experimental stations and sites: Climate, classification, physiological and chemical properties, and land use. ICARDA, Aleppo, p. 107.Google Scholar
  15. Zhang, H., Oweis, T., Garabet, S., Pala, M. 1998. Water-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environment. Plant Soil 201:295–305.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest 2009

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.International Center for Agricultural Research in the Dry Areas (ICARDA)AleppoSyria
  2. 2.Japan International Research Center for Agricultural Sciences (JIRCAS)Tsukuba, IbarakiJapan

Personalised recommendations