Variation of the percentage of hybrid acorns per mother tree.
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Abstract
<p>In each stand, each bar is a mother tree, bar height represents the percentage of acorns collected from the mother tree with a father assigned from a species different from the species of the mother tree (hence a hybrid). □ <i>Quercus petraea</i> ▪ <i>Quercus robur </i> Undetermined species.</p