.2003). Sexualconflictcanfurtherbedividedinto two components: interlocus and intralocus conflict.Interlocus conflict designates the form of conflict inwhich the expression of a sex-limited locus results in a netfitness benefitto thesexexpressingit anda fitness costto theother sex, usually through direct reproductive interactions.Thisleadstostrongselectionforacounteractingmechanism,usually governed by a different locus, in the other sex. Theresult is rapid evolution of the loci involved and open-endedcycles of antagonistic coevolution between the sexes (Hol-land and Rice 1998).Intralocus conflict involves traits (and hence alleles) thatareexpressedinbothsexes,buthavedifferentoptimaineachsex (Rice and Chippindale 2001), thereby creating divergentselection pressures across sexes. However, because malesand females of the same species share the same genome, ge-netic correlations for the same trait between sexes impedethe independent evolution of the trait within each sex, lead-ing to a conflict between the sexes. A part of the conflict canpotentially be resolved by evolution of sex-limited gene ex-pression leading to sexual dimorphism. The unresolved partof the conflict maintains each sex away from its optimum,creating a gender load.Sexual conflict has mainly been investigated in animalsand the interlocus component has been the principal focusof past studies. However, among the very large diversityof reproductive systems of plants, dioecy gathers all the