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Home → Publications → Tree Improvement and Genetics → Northeastern Forest Tree Improvement Conference → 29th Northeastern Forest Tree Improvement Conference (1985) → Genetic Variation in Nitrogen Concentration, Accumulation and Utilization Efficiency in 20 Latrix Laricina Families

Genetic Variation in Nitrogen Concentration, Accumulation and Utilization Efficiency in 20 Latrix Laricina Families

Twenty half-sib familes of Larix laricina from 5 stands in Nova Scotia were grown under 3 nitrogen levels (12.5, 50, 200 ppm) in a greenhouse for 20 weeks. Tissue nitrogen concentrations were determined by using an automatic analyser. The results showed that the effect of nitrogen on tissue nitrogen concentrations, accumulations and utilization efficiency was stronger than the genetic effect. The family effect was significantly different for total plant nitrogen concentration, accumulation and utilization efficiency. The family x fertilizer interaction was significantly different at the 1% level only for total plant nitrogen accumulation. Narrow-sense heritability estimates were 0.43, 0.49 and 0.32 for total plant nitrogen concentration, accumulation and utilization efficiency, respectively. Families that were capable of accumulating more nitrogen and utilizing it more efficiently also grew best.


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Author(s): James M. Wanyancha, E. K. Morgenstern

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1985