Cyanogenesis in Clover Trifolium, Fabaceae

corniculatus in southern England, and demonstrated that presence of cyanogenic glycosides is dominant over their absence. Further work on inheritance of cyano-genesis in this species was complicated by the fact that this clover is a tetraploid. Work with other species led to more definitive results, however. 

Further confirmation that the HCN polymorphism is a general phenomenon came from the work of a colleague at the University of British Columbia, Fred Ganders (1990), who studied white clover from six sites in southwestern British Columbia and adjacent Washington. In all but one of the sites (the exception being a particularly 

Reports continue to appear dealing with the antiherbivore properties of cyanogenic plants. Eor example. Saucy et al. (1999) demonstrated, using laboratory as well as outdoor enclosure experiments, that voles (Arvicola terrestris) showed clear 

Additional information relating to cyanogenesis polymorphisms can be found in a recent paper by Schappert and Shore (1999) who stndied the phenomenon in Turnera ulmifolia L. (Tnmeraceae), which is used by Euptoieta hegesia (Lepidoptera Nym-phalidae) as its primary host plant. 

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