What are the differences among breeder,foundation, registered seeds?

Breeder seeds (BS) are produced by breeding institutions such as IRRI, UPLB, and Philrice.
These seeds are obtained from uniform panicles that are selected by plant breeders in the
field and in the laboratory. These are certified 100% pure by the National Seed Quality
Control Services (NSQCS). These are distributed to Philrice branch stations and some
selected members of the R&D network and SeedNet for further multiplication.

Foundation seeds (FS) are produced from the BS by Philrice branch stations and some
selected members of the R&D network and SeedNet. These are certified 98% pure by the NSQCS.
These carry a red tag and are distributed to all members of the SeedNet and selected seed growers
in every province for further multiplication. The difference in seed classes is also determined
by the number of mixture(s) NSQCS has allowed.

Registered seeds (RS) are produced from FS by SeedNet members and selected seed growers. These carry a green tag and are distributed t all accredited seed producers for mass production.