Asymmetric Hybrids - Asymmetric hybrids provide an opportunity for the introgression of few desirable genes from one fusion partner into the other. Interestingly, the degree of chromosome elimination does not appear to depend on the irradiation dose; it seems to depend mainly on the species combination used in the fusion.

Several examples of such gene transfers have been reported, e.g., genes for isozymes, nitrate reductase, disease resistance, etc. For example, six plants obtained from fusion of protoplasts of B. juncea and Trachystoma ballii showed intermediate morphology.