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    Question

    Malling IX is a rootstock

    of:
    A Apple Correct Answer Incorrect Answer
    B Litchi Correct Answer Incorrect Answer
    C Ber Correct Answer Incorrect Answer
    D Banana Correct Answer Incorrect Answer

    Solution

    From about 1917, collaboration between East Malling and the John Innes Institute, in Merton Park in Surrey, gave rise to the Malling-Merton series, which were resistant to Eriosoma lanigerum, the woolly apple aphid. Common Malling rootstocks in the 1940s: US M2, M7, M8, M9 and M13. UK M1, M2, M9, M12, M13 and M16.

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