Xenia effects in pericarp thickness and content might be due to the pollen parents with larger partlydominant gene than that of the seed parents, and the dominant gene might be the decreasing genes.

• 可能系因花粉亲带有较多的部份显性基因，而部份显性基因具有减少果皮厚度及含量之作用，因此在种子亲上的杂交种子其果皮厚度及含量明显的受花粉直感效应而改变其性状之表现。