Clones with relatively fewer cones allocated more resources to producing cones in the optimal cone-producing layer (upper crown layer) than would be expected from their biomass allocation, suggesting that optimal cone production is the result of a pollination-related factor.
Mots-clés : allocation des cônes, caractéristique des cônes, étages du houppier, Pinus densiflora, qualité du pollen, ratio graine-ovule S/O).  [Traduit par la Rédaction] de Jong, T., and Klinkhamner, P.G.L. 1989.