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Histology of the relation between minor and major genes for resistance of barley to leaf rust



Histology of the relation between minor and major genes for resistance of barley to leaf rust



Phytopathology 73(1): 55-59



Pa7 and Pa3, 2 major genes conferring hypersensitive resistance to Puccinia hordei, were introduced into 3 genetic backgrounds with different levels of partial resistance (PR) to study the interaction between both types of resistance. The growth rate and the degree of abortion of colonies in the genotypes were determined by fluorescence microscopy. The degree of host cell necrosis was recorded.

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