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    Question

    Which of the following method is not relevant to hybrid

    rice seed production?
    A Three-line system Correct Answer Incorrect Answer
    B Two-line system Correct Answer Incorrect Answer
    C Using chemical emasculators Correct Answer Incorrect Answer
    D Using Gynomonoecious lines Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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