Measuring and modeling crop loss of wheat caused by septoria leaf blotch in seven cultivars and lines in Iran
More details
Hide details
Depatment of Plant Pathology, College of Agriculture, Tarbiat Modares University, Tehran, Iran
Seed and Plant Certification and Registration Institute, Karaj, Iran
Naser Safaie
Depatment of Plant Pathology, College of Agriculture, Tarbiat Modares University, Tehran, Iran
Journal of Plant Protection Research 2009;49(3):257–262
Septoria leaf blotch caused by Septoria tritici, is one of the most important diseases of wheat worldwide including Iran. To determine yield reduction caused by this disease in Golestan province, field experiments were carried out in randomized complete block design with four replications and five wheat cvs. Tajan, Zagros, Shiroodi, Koohdasht, Shanghai and two lines N-80-6 and N-80-19 at Gorgan Research Station. Artificial inoculation was performed using spore suspension at three growth stages (Zadoks scale) including tillering (GS 37), stem elongation (GS 45) and flag leaf opening (GS 53). Control plots were sprayed with water. In this study, the 1 000 kernel weight (TKW), grain yield and area under disease progress curve (AUDPC) during growth season were measured. Statistical analysis showed that the levels of yield reduction was different in various studied wheat cultivars and lines and was reduced by 30 to 50%. The highest losses were observed for cvs. Zagros and Tajan with 48.86% and 47.41% of grain yield reduction, respectively. There was a positive correlation between grain yield reduction and AUDPC. The results of crop loss modelling using integral and multiple point regression models showed that the integral model (L = 1230.91+1.37AUDPC) in which AUDPC and crop loss percentages were independent and dependent variables,respectively, could explain more than 95% of AUDPC variations in relation to crop loss in all cultivars in two years. In the study of integral model for each cultivar, cv. Shiroodi showed the highest fitness. In multiple point models, disease severity at various dates was considered as independent variables and crop loss percentage as dependent variable. This model with the highest coefficient of determination had the best fitness for crop loss estimation. Besides, the results showed that the disease severity at GS37, GS53 and GS91 stages (Zadok’s scale) was more important for crop loss prediction than that in other phenological stages
The authors have declared that no conflict of interests exist.
Burleigh J.R., Roelfs A.P., Eversmeyer M.G. 1972. Estimating damage to wheat caused by Puccinia recondita tritici. Phytopathology 62: 944–946.
Campbell C.L., Madden L.V. 1990. Introduction to Plant Disease Epidemiology. John Wiley and Sons, 532 pp.
Chungu C., Gilbert J., Townley-Smith F. 2001. Septoria tritici blotch development as affected by temperature, duration of leaf wetness, inoculum concentration, and host. Plant Dis. 85: 430–435.
Cordo C.A., Simon M.R., Perello A. E. Alippi A.E. 1999. Spore dispresal of leaf blotch pathogens of wheat (Mycosphaerella graminicola and Septoria tritci). p: 98–101. In: “Septoria and Stagonospora Disease of Cereal: A Compilation of Global Research”. Mexico, D.F.: CIMMYT: 98–101.
Dad rezaie S.T., Minassian V., Torabi M., Lotfali ayene Gh.A. 2003. Effect of Septoria tritici infections at different growth stages on yield and yield components of three wheat cultivars. Seed and Seedling J. 19: 101–106.
Eyal Z. 1981. Integrated control of Septoria diseases of wheat. Plant Dis. 65: 763–768.
Eyal Z., Scharen A.L., Prescott M.J., Van Ginkel M. 1987. The Septoria diseases of wheat: concepts and methods of disease management. Mexico, D. F.: CIMMYT, 46 pp.
Eyal Z. 1999. The Septoria/ Stagonospora blotch diseases of wheat: past, peresent, and future. p. 177–182. In: “Septoria and Stagonospora Disease of Cereal: A Compilation of Global Research”. Mexico, D.F.: CIMMYT: 177–182.
Forrer H.R., Zadoks J.C. 1983. Yield reduction in wheat in relation to leaf necrosis caused by Septoria tritici. Neth. J. Plant Pathol. 89: 87–98.
Gregory L.V., Ayers J.E., Nelson R.R. 1978. Predicting yield losses in corn from southern corn leaf blight. Phytopathology 68: 517–521.
Hghdael M., Banihashemi Z. 2003. Reaction of wheat cultivars to isolates of Septaria Tritici under greenhouse and controlled chamber conditions. Iranian J. Plant Pathol. 39: 65–67.
Khelghatibana F., Dadrezaie S.T. 2006. Evaluation of synthetic hexaploid wheat lines for resistance to Septoria tritici in field. 16th Iranian Plant Protection Congress, p. 12.
Khelghatibana F., Dadrezaie S.T., Dehghan M.A., Nazari A., Torabi M. 2004a. Evaluation of the wheat genotypes from north elite regional wheat yield trials (ERWYT-2003) for resistance to Septoria tritici in field. 16th Iranian Plant Protection Congress, p. 14.
Khelghatibana F., Zade-Dabbagh G., Dehghan M.A. 2004b. Evaluation of wheat lines and genotypes from advanced regional wheat yield trials (ARWYT) for resistance to Septoria tritici in field. 16th Iranian Plant Protection Congress, p. 13.
Kia Sh., Torabi M., Nazari A. 2006a. Evaluation of resisitance to Septoria leaf blotch in wheat lines and cultivars. 17th Iranian Plant Protection Congress, p. 3.
Kia Sh., Torabi M., Nazari A. 2006b. Study on the effects of Septoria leaf blotch (Septoria tritici) infection on yield reduction of wheat cultivars in Golestan province. 17th Iranian Plant Protection Congress, p. 4.
Madden L.V. 1983. Measuring and modeling crop losses at the field level. Phytopathology 73: 1591–1596.
Madden L.V., Hughes G., Irwin M.E. 2000. Coupling disease – progress – curve and time – of – infection for predicting yield loss of crop. Phytopathology 90: 788–800.
Madden L.V., Pennypacker S.P., Kingsolver C.H. 1981. A comparison of Crop loss models. Phytopathology 101: 196–201.
Magboul A.M., Geng S., Gilchrist D.G., Jackson L.F. 1992. Environmental influence on the infection of wheat by Mycosphaerella graminicola. Phytopathology 82: 1407–1413.
McKendry A.L., Henke G.E., Finney P.L. 1995. Effect of Septoria leaf blotch on soft red winter wheat milling and baking quality. Cereal Chemistry 72: 142–146.
Mehrabi M. 2002. Evaluation of tetraploid wheat accessions of Triticum turgidum to Septaria leaf blotch (Mycosphaerella graminicola) disease. 15th Iranian Plant Protection Congress, p. 26.
Milus E.A. 1994. Effect of leaf rust and Septoria leaf blotch on yield and test weight of wheat in Arkansas. Plant Dis. 78: 55–56.
Nazari A., Dehghan M.A., Khelghatibana F. 2002. Resistance sources against Septoria leaf blotch in advanced lines of wheat. The First International Wheat Congress. Tehran, 7–10 Dec 2002, p. 170 (in farsi).
Pouralibaba H.R., Torabi M., Dehghan M.A., Dadrezaie S.T. 2004. Evaluation of some advanced dry land wheat genotypes for resistance to Septaria leaf blotch disease caused by Septoria tritici(per. Mycosphaerella graminicola). 16th Iranian Plant Protection Congress, p. 47.
Rajaram S. 1999. Historical aspects and future challenges of an international wheat program. p. 1–17. In: Septoria and Stagonospora Disease of Cereal: A Compilation of Global Research. Mexico, D.F.: CIMMYT: 1–17.
Robert C., Bancal M.O., Nicolas P., Lannou Ch., Ney B. 2004. Analysis and Modeling of effects of leaf rust and Septoria tritici blotch on wheat growth. J. Exp. Bot. 55: 1079–1094.
Saari E.E., Prescott J.M. 1975. A scale for appraising the foliar intensity of wheat diseases. Plant Dis. Report. 59: 377–380.
Scharen A.L. 1999. Biology of the Septoria/ Stagonospora pathogens: An overview. p: 19–22. In: Septoria and Stagonos pora Disease of Cereal: A Compilation of Global Research. Mexico, D.F.: CIMMYT: 19–22.
Shaw M.W., Royle D. J. 1989. Airborne inoculum as a major source of Septoria tritici(Mycosphaerella graminicola) infecions in winter wheat crops in the UK. Plant Pathol. 38: 35–43.
Teng P.S. 1987. Quantifying the relationship between disease intensity and yield loss. p. 105–113. In: “Crop Loss Assessment and Pest Management” (P.S.Teng, ed.). APS PRESS.
Thomas M.R., Cook R.J., King J.E. 1989. Factors affecting development of Septoria tritici in winter wheat and its effect on yield. Plant Pathol. 38: 246–257.
Torabi M. 1980. Wheat septorios and its importance in Iran. Iranian J. Plant Pathol. 16: 7–14.
Torabi M., Pouralibaba H.R., Dehghan M.A., Dadrezaie S.T. 2002. Evaluation of resistance of advanced dry land wheat lines at seedling and adult stages against Septoria leaf blotch in different part of Iran. 15th Iranian Plant Protection Congress, p. 6.
Zhang X.Y., Loyce C., Meynard J.M., Monod H. 2007. Modeling the effect of cultivar resistance on yield losses of winter wheat in natural multiple disease conditions. Eur. J. Agron. 26: 384–393.