parentstock
nounUK /ˈpeə.rənt.stɒk/
US /ˈper.ənt.stɑːk/
The animals or plants that are used to make babies for a farm or garden.
The farmer kept the best hens as parentstock for next year's chicks.
OTHER MEANINGS
2. The original group of plants from which new plants are grown.
The nursery saved parentstock seeds to grow the next crop.
3. A family line or group of ancestors.
Her parentstock came from a small village in the north.
4. The main supply or source that something new is made from.
These old trees are the parentstock for the whole orchard.