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      Question

      Which rose species is primarily used as a rootstock in

      hilly regions due to its cold tolerance?
      A Rosa damascena Correct Answer Incorrect Answer
      B Rosa bourboniana Correct Answer Incorrect Answer
      C Rosa indica var. odorata Correct Answer Incorrect Answer
      D Rosa canina Correct Answer Incorrect Answer

      Solution

      R. canina is adapted to cold conditions and is used as a hardy rootstock in temperate hilly zones for grafting commercial rose cultivars.

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