Concept:
Seed production follows a systematic chain to maintain genetic purity and varietal identity. Different classes of seed are produced under strict supervision and certification standards.
Step 1: Understand the seed production chain.
The standard sequence of seed multiplication is:
\[
\text{Nucleus Seed} \rightarrow \text{Breeder Seed} \rightarrow \text{Foundation Seed} \rightarrow \text{Certified Seed}
\]
Foundation seed is generally produced from breeder seed under controlled conditions.
Step 2: Identify the source of foundation seed production.
Under certification procedures, foundation seed can also be produced from previously produced foundation seed to maintain sufficient seed supply. Such generations are often referred to as Foundation Seed Stage-I and Stage-II.
Therefore, foundation seed is the progeny of breeder seed and foundation seed.