Investigation on pathogenicity of Dilophospora alopecuri, cause of twist disease of wheat, in interaction with seed gall nematode (Anguina tritici)

Document Type : Research Paper

Authors

1 Department of Plant Protection, Faculty of crop Sciences. Sari Agricultural Sciences and Natural Resources University. Sari. Iran

2 Department of Plant Protection, Faculty of crop Sciences., Sari Agricultural Sciences and Natural Resources University

3 Department of Plant Protection, ّ Faculty of crop Sciences, Sari Agricultural Sciences and Natural Resources University. Sari. Iran.

4 Plant Protection Research Department, Golestan Agricultural and Natural Resources Research Center. Gorgan. Iran

5 Department of Plant Protection. Faculty of Natural Resources, College of Agricultural Science & Engineering, University of Tehran. Karaj. Iran

Abstract

Twist disease of wheat caused by Dilophospora alopecuri is one of the diseases that is observed along with wheat seed gall nematode (Anguina tritici) in Golestan province. In order to investigate the pathogenicity of the fungus, an experiment was performed in two cases including inoculation of the fungus alone, D. alopecuri and the nematode together and nematode alone on 4 cultivars of wheat known as Ehsan, Kouhdasht, Morvarid and Line 17 under greenhouse condition. Traits such as decrease of dry weight of infected plant, decrease of plant height, number of fungus-infected plants, number of spike infected by the fungus, number of nematode-infected plants, total weight of nematode galls, number of nematode galls and average galls weight per plant were measured in different cultivars. The analysis was performed using SAS software, and the comparison of the means was achieved by the LSD test. The results of analysis of variance showed that the interaction between D. alopecuri and wheat cultivars and the effect of the fungus on the measured indices in wheat cultivars was significant. The results showed that D. alopecuri can cause disease on wheat only in the presence of A. tritici and the presence of nematode is necessary for fungal pathogenicity and its distribution in the wheat spike.

Keywords

References

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Iranian Journal of Plant Protection Science
Volume 53, Issue 1
April 2022
Pages 1-9

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History

  • Receive Date: 30 September 2021
  • Revise Date: 17 January 2022
  • Accept Date: 19 January 2022

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