Abstract
SEEDLINGS of Khapli wheat (Triticum dicoccum) are resistant to most races of Puccinia graminis var. tritici. However, they can be made susceptible by the application of DDT (dichlorodiphenyltrichloroethane) to the leaves1, by treatment of the plants with maleic hydrazide (private communication from Drs. D. J. Samborski and M. Shaw) and by detaching and floating the leaves on water (private communication from Dr. D. F. Forward). A new method of changing the reaction of the Khapli seedling from resistant to susceptible has been found. The uptake of iron salts by the roots causes a resistant reaction in a normally susceptible plant and it is believed that this finding has economic significance.
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References
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FORSYTH, F. Effect of Ions of Certain Metals on the Development of Stem Rust in the Wheat Plant. Nature 179, 217–218 (1957). https://doi.org/10.1038/179217a0
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DOI: https://doi.org/10.1038/179217a0
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