Effective testing for hybrid-purity and varietal identification of vegetable
seeds can be accomplished using a number of laboratory techniques. Although
DNA-based methods are becoming commonplace in agricultural
settings, high development costs have made these assays impractical for
routine testing. While STA Laboratories has developed a number of
cost-effective DNA methods it is primarily because of cost and simplicity
that isozymes have emerged as the preferred tool for evaluation of seed
genetics.