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Inherent differences in response of douglas fir families to nitrogen and phosphorus supply levels

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Abstract

Douglas fir (Pseudotsuga menziessi [Mirb.] Franco) seedlings from a half diallel mating design showed significant family by nutrient interactions when grown in a 3N × 3P × 15 family factorial experiment for 2 yr. Differences in response of these families to N and P treatment levels were related to nutrient productivity (dry matter production nutrient−1 time−1), but unrelated to the proportion of dry matter allocated to root growth, or to nutrient net uptake rate. Significance of general combining ability for N and K productivity showed clonal control of these characters. Evidence for genetic control of tissue N% and K%, shoot:root ratio and N uptake rate were also shown.

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Authors and Affiliations

  1. Research Laboratory, Ministry of Forests, 1320 Glyn Road, V8Z 3A6, Victoria, British Columbia, Canada

    R. van den Driessche

  2. Canadian Pacific Forest Products Limited, Saanich Forestry Centre, 8067 East Saanich Road, V0S 1M0, RR 1 Saanichton, British Columbia, Canada

    Y. A. El-Kassaby

Authors
  1. R. van den Driessche
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  2. Y. A. El-Kassaby
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van den Driessche, R., El-Kassaby, Y.A. Inherent differences in response of douglas fir families to nitrogen and phosphorus supply levels. Water Air Soil Pollut 54, 657–663 (1990). https://doi.org/10.1007/BF02385163

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