講演詳細

遺伝・育種部門[Forest Genetics and Tree Breeding]

日付	2026年3月17日
開始時刻	ポスター発表
会場名	多目的ホール
講演番号	PF-20
発表題目	Comparative growth trajectories of diploid and triploid Japanese cedar cloned plus tress through 65 years of age. Comparative growth trajectories of diploid and triploid Japanese cedar cloned plus tress through 65 years of age.
所属	静岡大学
要旨本文	Long-term growth dynamics of Cryptomeria japonica D.Don remain poorly understood beyond mid-rotation ages, particularly for triploid-genotypes. We analyzed diameter growth of clonally propagated plus-trees at age 65, to quantify clonal variation and compare growth patterns between diploid and triploid clones. Diameter at breast height (DBH) from 554 trees representing eight clones were analyzed using a generalized linear mixed model. Increment cores from trees with DBH >25 cm was used to reconstruct growth curves with the Chapman-Richards model. Significant clonal variation in DBH was detected at 65 years, with repeatability of 0.20. Asymptotic size showed strong clonal control, whereas growth rate and curve shape varied more among clones. Diploids exhibited slower early growth and monotonic trajectories, while the triploids showed delayed early growth followed by sustained late-rotation growth after age 30.
著者氏名	○Belmain Manase Topul1 ・ Hanaoka, So2
著者所属	1Interfaculty graduate school of mountain watershed, Shizuoka University ・ 2Shizuoka University
キーワード	Growth Curve, Clonal variation, Heritability, Cryptomeria Japonica plus trees
Key word	Growth Curve, Clonal variation, Heritability, Cryptomeria Japonica plus trees