The effect of genotype and planting density on the growth patterns and selection of local varieties of Sugi (Cryptomeria japonica)

Yoshihiko Sato, Eitaro Fukatsu, Yuichiro Hiraoka, Atsushi Watanabe, Makoto Takahashi

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

We analyzed the effect of genotype and planting density on the growth patterns of height and diameter at breast height (DBH) and the efficiency of indirect early selection targeting on the low planting density using stem analysis data obtained from a test site composed of 6 cultivars and 3 planting densities (5, 000, 3, 000, 1, 500 trees/ha) at stand age 28. The growth pattern of height was mainly affected by genotype, but the effect of planting density was small. The growth pattern of DBH was affected by both genotype and planting density. Our results showed the importance of selection of the genotype of seedlings for the control of growth in plantations of Sugi. The results of genetic evaluation obtained at general planting density (3, 000 trees/ha) could be applied for the prediction of genetic performance of growth traits at different planting densities. Approximately 15 years would be required to obtain 80% of genetic gain at stand age 28 with the plantation of 1, 500 trees/ha according to the test results obtained at the plantation of general planting density (3, 000 trees/ha).

元の言語英語
ページ(範囲)45-52
ページ数8
ジャーナルNihon Ringakkai Shi/Journal of the Japanese Forestry Society
98
発行部数2
出版物ステータス出版済み - 1 1 2016

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Cryptomeria japonica
genotype
planting
plantation
plantations
tree and stand measurements
early selection
effect
growth traits
genetic improvement
targeting
cultivar
data analysis
testing
stem
seedling
stems
prediction
seedlings
cultivars

All Science Journal Classification (ASJC) codes

  • Forestry

これを引用

The effect of genotype and planting density on the growth patterns and selection of local varieties of Sugi (Cryptomeria japonica). / Sato, Yoshihiko; Fukatsu, Eitaro; Hiraoka, Yuichiro; Watanabe, Atsushi; Takahashi, Makoto.

:: Nihon Ringakkai Shi/Journal of the Japanese Forestry Society, 巻 98, 番号 2, 01.01.2016, p. 45-52.

研究成果: ジャーナルへの寄稿記事

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AU - Sato, Yoshihiko

AU - Fukatsu, Eitaro

AU - Hiraoka, Yuichiro

AU - Watanabe, Atsushi

AU - Takahashi, Makoto

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N2 - We analyzed the effect of genotype and planting density on the growth patterns of height and diameter at breast height (DBH) and the efficiency of indirect early selection targeting on the low planting density using stem analysis data obtained from a test site composed of 6 cultivars and 3 planting densities (5, 000, 3, 000, 1, 500 trees/ha) at stand age 28. The growth pattern of height was mainly affected by genotype, but the effect of planting density was small. The growth pattern of DBH was affected by both genotype and planting density. Our results showed the importance of selection of the genotype of seedlings for the control of growth in plantations of Sugi. The results of genetic evaluation obtained at general planting density (3, 000 trees/ha) could be applied for the prediction of genetic performance of growth traits at different planting densities. Approximately 15 years would be required to obtain 80% of genetic gain at stand age 28 with the plantation of 1, 500 trees/ha according to the test results obtained at the plantation of general planting density (3, 000 trees/ha).

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