Abstract
Tetraploid Grindelia camporum was selected for increased crude resin yield for a period of 2 yr. The observed response to selection, 0.8% of the aboveground dry weight/yr, was highly significant. Differences in resin yield between plants at different phenological stages were also highly significant. The selected line showed some signs of inbreeding depression in comparison to a control line, including lower dry-weight production and higher mortality.
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McLaughlin, S.P. Mass selection for increased resin yield inGrindelia camporum (compositae). Econ Bot 40, 155–161 (1986). https://doi.org/10.1007/BF02859137
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DOI: https://doi.org/10.1007/BF02859137