Mainly high phenotypic stability of black spruce clones for growth and wood traits in contrasted environments within the current breeding zones and multitrait selection in Québec's seed and breeding zones.

Abstract excerpt

Selected trees from various progeny trials cannot be directly compared. As parents of clonal seed orchards and components of the next breeding cycle, it is crucial to verify their stability in different soil and climatic conditions and to rank them for multiple traits. A subset of the best trees selected for height at 10 or 15 years was cloned to establish 2 clone trials per population for 4 breeding populations,...

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