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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 29th Southern Forest Tree Improvement Conference (2007) → Diallel Crossing in Pinus cembra: V. Age Trends in Genetic Parameters and Genetic Gain for Total and Annual Height Growth across 16 Years of Testing

Diallel Crossing in Pinus cembra: V. Age Trends in Genetic Parameters and Genetic Gain for Total and Annual Height Growth across 16 Years of Testing

A full diallel mating design (p=10 parents) was carried out in a natural population of Swiss stone pine (Pinus cembra L.) from the southern Carpathian Mountains. At age six, after nursery testing, the material was field planted in one site, using a completely randomized block design with 100 families, four replicates and 15 tree row-plots per replication, spaced 2.5 x 2.5 m. Total and annual height growth were assessed at successive ages across a 16 year testing period (i. e. nursery test between ages one to six and field test between ages seven and 16). Plot means of the measured traits were analyzed using the general least-squares method by means of the computer DIALL programmed prepared by SCHAFFER and USANIS (1969).


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Author(s): Ioan Blada, F. Popescu

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 2007