%0 Journal Article %T Some reducibility properties for pseudovarieties of the form DRH %A C¨Ślia Borlido %J Mathematics %D 2015 %I arXiv %X Let H be a pseudovariety of groups and DRH be the pseudovariety containing all finite semigroups whose regular R-classes belong to H. We study the relationship between reducibility of H and of DRH with respect to several particular classes of systems of equations. The classes of systems considered (of pointlike, idempotent pointlike and graph equations) are known to play a role in decidability questions concerning pseudovarieties of the forms V * W, V join W, and V malcev W. %U http://arxiv.org/abs/1512.01021v1