Step 1: Understanding the Question:
The question asks for the specific type of plantation established by forest breeders to maintain and manage superior genotypes for future crossing and selection.
Step 2: Detailed Explanation:
• Definition of Breeding Orchard: A breeding orchard (or breeding bank) is a plantation where selections (plus trees/clones) are collected and grown in a controlled environment. Its primary purpose is not seed production for general planting, but to act as a source of genetic material for making controlled crosses.
• Conservation Function: It serves as an *ex-situ* archive for the best genetic material of a species, ensuring that these genotypes are not lost and are easily accessible for the breeder.
• Advanced Generations: In a breeding orchard, breeders carry out specific matings to create the next (advanced) generation of improved trees.
• Comparison: A "Seed Orchard" (like clonal or seedling seed orchards) is designed primarily for the mass production of high-quality seeds for commercial reforestation, not for research or conservation of parents.
Step 3: Final Answer:
The Breeding orchard is primarily aimed at conservation and controlled breeding for advanced generations.