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Manual on general management principles for breeding seed orchards (BSOs). Part I: Data collection and assessment of traits

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Breeding seed orchards (BSOs) or seedling seed orchards (SSOs) comprise seedlings from selected trees in different provenances, but could also include seed lots from provenances. A family from a selected tree is known as an open pollinated family (OP-family). BSOs aim to provide improved germplasm after selection, but also serve as test sites of different seed sources.

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