g1=s1=p1 is a pome [fruit] of species/strain g2.
In botany, a pome (after the Latin word for fruit: pōmum) is a type of fruit (=grute) produced by flowering plants in the subtribe Malinae of the family Rosaceae. The best-known example of a pome is the apple (=plise). See also: plants in the subtribe Malinae of the family Rosaceae (=plisysmispa).