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MATERIALS NEEDED

When breeding within a genus, the collection of all its species will help, since a few of them may carry a specific gene. In breeding for yellow color, why not try Campanula makashvillii, Campanula sulphurea, Campanula ereophilum, Campanula vidalii, Campanula thyrsoides, or Campanula betulifolia? Out of the 300 species available, we begin with the 180 we believe most suitable.¹⁾