Abstract

Tree growth traits (tree height, DBH and stem volume) and survival from two 9-year-old, open-pollinated progeny tests of Chinese fir were investigated for heritability, genotype 9 environment interaction, age-age genetic correlation and selection efficiency. The 97 and 79 families planted at two sites were collected from the third-cycle seed orchard. Individual heritability was estimated between 0.05 and 0.21 for tree height, DBH, and volume and between 0.45 and 1.0 for survival. Family heritability was between 0.20 and 1.14. Significant genotype 9 environment interaction was observed for the three growth traits. Type B genetic correlation was between 0.41 and 0.67 with an increasing trend as tree grows. High age-age genetic correlation was observed with correlation reaching 0.9 after age 4 for height, DBH, and volume. The genetic gains were estimated at 3.26, 3.39 and 5.98 % for tree height, DBH, and volume with 10 % selection intensity. The implication for advanced tree breeding in Chinese fir is discussed.

Keywords

Chinese fir; Progeny test; Heritability; Genetic gain

Published in

Journal of Forestry Research
2016, Volume: 27, number: 5, pages: 1067-1075
Publisher: NORTHEAST FORESTRY UNIV

SLU Authors

• Wu, Harry

  • Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
    
  • Commonwealth Scientific and Industrial Research Organisation (CSIRO)

UKÄ Subject classification

Forest Science


Publication identifier

DOI: https://doi.org/10.1007/s11676-016-0250-1

Permanent link to this page (URI)

https://res.slu.se/id/publ/83150