A recent article entitled, “Polyploids and hybrids in changing environments:” published in the current issue of Heredity (110:95-96 reviews the evolutionary role polyploids have played in the whole plant kingdom. The authors consider allopolyploids to be more invasive compared to autopolyploids. It has been shown that the allopolyploid complex has shown repeated patterns of invasion on multiple continents. They illustrate their hypothesis, giving the example of the gutatus–luteus complex in the United Kingdom. The paper explains why it is difficult to make generalized predictions about the response of polyploids under changing environmental conditions. The article also points outthat it remains largely unresolved whether polyploidy, hybridization or both explain the potential for invasiveness and adaptation to varying environmental conditions. What is required is the integration of ecology, evolution and genomics, in both plants and animals: recent developments in genomic technologies indicate that with the new tools now available it is possible to unravel the mystery of the trend of various evolutionary paths affecting the evolution of allpolyploids.