Evaluation Reaction of some Wheat Cultivars to take-all Disease (Gaeumannomyces graminis var Tritici)

Author: Masoud Khanahmadi*, Fereshteh Bayat* and Fatemeh Jamali**

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Abstract

Take-all caused by the soil-borne fungal pathogen Gaeumannomyces graminis (Ggt) is one of the most destructive root diseases in wheat and other cereal grain crops in the world. Ten wheat varieties were evaluated for their susceptibility to take-all (Ggt) at the seedling stage in a five week pot test. The dilute artificial inoculum was prepared by mixing the sand/maize-meal inoculums with silver sand. Ten seeds of each variety were placed on the soil surface of a pot and covered with a thin layer of horticultural grit. The factorial experiment with completely randomized design with five replicates was set up. After 5 weeks the plants were removed and their roots washed out with water and the percentage of plants and roots infection was then calculated. Based on the percentage of necrosis roots disease severity was scored. Also root and shoot length, root and shoot fresh/dry weight were measured. Statistical analysis indicated significant differences at 1% level between the wheat species

Keywords

Wheat, take all, Gaeumannomyces gramini, germplasm.

Conclusion

Take-all caused by the soil-borne fungal pathogen Gaeumannomyces graminis (Ggt) is one of the most destructive root diseases in wheat and other cereal grain crops in the world. Ten wheat varieties were evaluated for their susceptibility to take-all (Ggt) at the seedling stage in a five week pot test. The dilute artificial inoculum was prepared by mixing the sand/maize-meal inoculums with silver sand. Ten seeds of each variety were placed on the soil surface of a pot and covered with a thin layer of horticultural grit. The factorial experiment with completely randomized design with five replicates was set up. After 5 weeks the plants were removed and their roots washed out with water and the percentage of plants and roots infection was then calculated. Based on the percentage of necrosis roots disease severity was scored. Also root and shoot length, root and shoot fresh/dry weight were measured. Statistical analysis indicated significant differences at 1% level between the wheat species

References

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How to cite this article

Masoud Khanahmadi, Fereshteh Bayat and Fatemeh Jamali (2016). Evaluation Reaction of some Wheat Cultivars to take-all Disease (Gaeumannomyces graminis var Tritici) , Biological Forum – An International Journal 8(1): 526-531.