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2012•Journal of Fujian Forestry Science and TechnologyRequires access

Analysis of Half-Sib Progeny Test Forest of the 2nd Generation Seed Orchard of 8-Year-Old Cunninghamia lanceolata

Meng Qingyin

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Abstract

Half-sib progeny test of the 2nd generation seed orchard of C.lanceolata was carried out in the Guanzhuang National Forest Farm.The results showed that when the stand was 8 years old,the average of tree height,DHB and stem volume was 7.49 m,10.8 cm and 0.0462 m3 respectively.There were significant differences among families.Lower-moderately genetic factor controlled growth in family level,but it was lightly controlled in individual level.12 superior families and 9 superior individuals were selected based on 8-year-old stem volume.Average stem volume genetic gain of superior families was 11.93%,and that of superior individuals was 24.36%.The selection effect was evident.

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What this paper is about

Half-sib progeny test of the 2nd generation seed orchard of C.lanceolata was carried out in the Guanzhuang National Forest Farm.The results showed that when the stand was 8 years old,the average of tree height,DHB and stem volume was 7.49 m,10.8 cm and 0.0462 m3 respectively.There were significant differences among families.Lower-moderately genetic factor controlled growth in family level,but it was lightly controlled in individual level.12 superior families and 9 superior individuals were selected based on 8-year-old stem volume.Average stem volume genetic gain of superior families was 11.93%,and that of superior individuals was 24.36%.The selection effect was evident.

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Available abstract

Half-sib progeny test of the 2nd generation seed orchard of C.lanceolata was carried out in the Guanzhuang National Forest Farm.The results showed that when the stand was 8 years old,the average of tree height,DHB and stem volume was 7.49 m,10.8 cm and 0.0462 m3 respectively.There were significant differences among families.Lower-moderately genetic factor controlled growth in family level,but it was lightly controlled in individual level.12 superior families and 9 superior individuals were selected based on 8-year-old stem volume.Average stem volume genetic gain of superior families was 11.93%,and that of superior individuals was 24.36%.The selection effect was evident.

Key concepts: Cunninghamia, Seed orchard, Genetic gain, Biology, National forest, Orchard, Selection (genetic algorithm), Horticulture

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Analysis of Half-Sib Progeny Test Forest of the 2nd Generation Seed Orchard of 8-Year-Old Cunninghamia lanceolata — Research Paper | ScholarLens