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Official Journal of the Japan Wood Research Society

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Fig. 3 | Journal of Wood Science

Fig. 3

From: Seasonal variations of tracheid formation and amount of auxin (IAA) and gibberellin A4 (GA4) in cambial-region tissues of mature sugi (Cryptomeria japonica) cultivar grown in a Nelder plot with different tree densities

Fig. 3

Relationship between phyohormones and number of tracheids. The number of tracheids in June, August, October, and December was the number of tracheids formed at initiation of xylem formation—June, June–August, August–October, and October–December, respectively. a IAA amounts, b GA4 amounts, c coefficient of correlations between phyohormones and number of tracheids in each season, r coefficients of correlations, **p < 0.01, *p < 0.05

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