Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Review speciation Asteraceae Mangifera indica (mango) Senecio Senecio lautus Soil adaptive radiation centromeric regions chromosomal inversions deleterious alleles extrinsic reproductive isolation genetic architecture genomics geography of speciation hybrid speciation intrinsic reproductive isolation local PCA local adaptation low‐recombination regions model system parapatry plant breeding plants predation quantitative genetics reproductive isolation