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European Journal of Plant Pathology

, Volume 154, Issue 4, pp 1077–1089 | Cite as

Wheat stripe rust epidemics in interaction with climate, genotype and planting date

  • Bita NaseriEmail author
  • Alireza Marefat
Article

Abstract

Stripe rust is a potential threat to wheat production in the world. From 2013 to 2017, a total number of 282 stripe rust progress curves were characterized at the plot scale in Kermanshah province, Iran, according to a number of agro-ecological traits. Disease incidence and severity varied by cultivar, planting date, sampling time and year. Area under disease progress curve (AUDPC) on a severity rating basis was ranked according to the Kruskal-Wallis one-way ANOVA. H-test comparisons among cultivars showed greater mean AUDPC values for cvs. Sivand, Bahar and Chamran II, while cv. Pishgam had a lowest AUDPC value. Mean AUDPC value for early disease onset was greater than that for late disease onset. Greater AUDPC corresponded to smaller resistance index ranging from 0 to 70. Highest and lowest AUDPC occurred in spring 2016 and 2015, respectively. From principal component analysis, three principal factors accounting for 84% of the total variance evidenced dependence of stripe rust development on air temperature and moisture, disease-onset and maturity date, resistance index, and planting date. From regression analysis, the number of days with minimum temperatures within the range of 5–12 °C and RH above 60%, disease-onset and maturity date, resistance index, and planting date accounted for 62% of variations in AUDPC values. The present findings emphasize careful selection of cultivar resistance, maturity and planting dates, along with climatic descriptors, to improve accuracy of disease prediction models, durability of cultivar resistance to stripe rust, and sustainability of disease management programs.

Keywords

Cereals Multivariate analysis Weather Yellow rust 

Notes

Acknowledgements

This research was financially supported by the Iranian Agricultural Research, Education & Extension Organization, project no. 2-55-16-94165. The authors acknowledge Mr. M Noroozi for his technical assistance throughout this work.

Compliance with ethical standards

Conflict of interest

There is no conflict of interest related to this research.

Research involving human participants and/or animals

This is not applicable to this research.

Informed consent

This is not applicable to this research.

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Copyright information

© Koninklijke Nederlandse Planteziektenkundige Vereniging 2019

Authors and Affiliations

  1. 1.Plant Protection Research DepartmentKermanshah Agricultural & Natural Resources Research & Education Center, AREEOKermanshahIran
  2. 2.Department of Plant Protection, Faculty of AgricultureRazi UniversityKermanshahIran

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