According to some theories, the first San Marzano tomato seed arrived in Campania in 1770, as a gift from the viceroy of Peru to the king of Naples.
It was planted in the area corresponding to the current municipality of San Marzano sul Sarno, where it took root thanks to the fertility of the volcanic soil.
In the United States of America, San Marzano is considered the genetic basis for another type of crop, the tomato variety "Roma" (in turn considered a hybrid ).
The industrial transformation process of the San Marzano tomato began around 1926. The original "San Marzano" cultivation was destroyed by a virus, and therefore officially canceled from the variety catalog in 1991.
The varieties currently admitted for agricultural production by the PDO production specification, which retain part of the genetic heritage of the original variety, are the KIROS (formerly "Selezione Cirio 3"), "San Marzano 2" and the ecotypes related to this type including the "20 SMEC 3", obtained from the selection work within a project funded by the Campania Region and entrusted in the period 1995-1997 to the Consortium for Applied Research in Agriculture (CRAA). KIROS represents the reference cultivar for the production of San Marzano, covering almost all agricultural production.
- 400 gr stk