Mango varieties can be classified as having either
monoembryonic or polyembryonic seed embryos. In
monoembryonic varieties, the seed contains only one embryo
thatis a true sexual(zygotic) embryo.Monoembryonic
seeds are a cross between the maternal and paternal (pollen)
parents. Fruit from monoembryonic seedlings will often
vary from the parent trees,so propagation by grafting is
used to produce true-to-type monoembryonic trees. Polyembryonic
seeds contain many embryos, most of which
are asexual (nucellar) in origin and genetically identical to
the maternal parent. Polyembryonic seeds also contain a
zygotic embryo that is the result of cross-pollination.