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Official Journal of the Japan Wood Research Society

Fig. 5 | Journal of Wood Science

Fig. 5

From: Seasonal variations of auxin and gibberellin A4 levels in cambial-region tissues of three conifers (Pinus elliottii, Chamaecyparis obtusa, and Cryptomeria japonica) with inherently different wood densities

Fig. 5

Relationships between IAA levels and tracheid formation in three conifers during late season. Sugi and hinoki data were from July and September, and slash pine data were from July, September, and November. For example, the plotted data for July include the IAA levels in July and the number of tracheids formed in test period II. **p < 0.01, *p < 0.05

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