The Effect of Self-Compatibility Factors on Interspecific Compatibility in Section .

The relationships of interspecific compatibility and incompatibility in section are complex. Inquiry into these relationships in tomato and its wild relatives has elucidated the pleiotropic and redundant function of and which tandemly and independently mediate both interspecific and intraspecific pollen rejection. Our findings presented here are consistent with previous work conducted in section showing that plays a central role in interspecific pollen rejection. Statistical analyses also demonstrated that alone is not a significant factor in these pollinations; demonstrating the overlap in gene function between and , as , was present and functional in all genotypes used. We were not able to replicate the general absence of prezygotic stylar barriers observable in , which has been attributed to the lack of indicating that other non- factors play a significant role. We also demonstrated that played no significant role in these interspecific pollinations, directly conflicting with previous research. It is possible that as a pollen donor is better able to bypass stylar barriers in 1EBN species such as . Consequently, may be a valuable resource in accessing these 1EBN species regardless of status.