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Geographic variation in Quercus rubra in north central United States plantations


, : Geographic variation in Quercus rubra in north central United States plantations. Silvae Genetica 25(3/4): 118-122

Trees from 31 sources were grown in seven localities and the variation observed in 14-year-old trees was recorded. Time of flushing and of autumnal change in leaf colour appeared to be under strong genetic control and showed well-defined geographic variation. Trees from the north central region flushed the earliest, and early autumn leaf-colour change was associated with high latitude. Trees from regions subject to summer drought were the most drought resistant.

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Other references

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