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    Question

    The famous gene for gene was first established in 1946

    in
    A Melampsora lini Correct Answer Incorrect Answer
    B Phytophthora infestans Correct Answer Incorrect Answer
    C Botrytis cinerea Correct Answer Incorrect Answer
    D Alternaria solani Correct Answer Incorrect Answer
    E Phomopsis vexans Correct Answer Incorrect Answer

    Solution

    For each resistance gene in the host there is a corresponding gene for avirulence in the pathogen conferring resistance and vice-versa. This gene for gene hypothesis was given by HH Flor in 1946 on flax rust (Linseed rust) caused by Melampsora lini.

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