If the string is tuned to G and I want to play the chord progression G B C and C minor, could I somehow imply the C and C minor chord on the same string? I am trying to learn songs on a diddley bow.I can play songs rhythmically by strumming the note in place of the chords. These notes become implied chords. I went for a long time learning songs this way and it works pretty good... I know that I could just keep strumming the C note through both the C and C minor ,but it is not as colorful. I am 50 and I don't know squat when it comes to music. I do know that I can play both the G major and minor scales on the same string. And that G minor scale has an Eb note in it... also C minor has a relative chord Eb major. Could I then play the Eb note to imply the C minor chord?
As you say, you could play the other notes from the chord ('chord tones') as well as the root note. (Depending on how you do this, this is sometimes called an arpeggio).
So to play a C major chord, you could make up a pattern with C, E, and G.
To play a C minor chord, you could make up a pattern with C, Eb, and G.
You may be able to imply C minor simply by throwing in one Eb in among the C notes.