Chemical composition of
earlywood and latewood in Norway spruce heartwood.
Correlation coefficient between monthly average precipitation and accumulative from 1961 to 2004, and total annual ring,
earlywood and latewood indexes of Pinus oocarpa.
(7) Closure of vessels (especially in
earlywood) by means of tylosis formation.
Owing to its spot size, the ASD probe was able to capture more sample variability, that is, variation in
earlywood and latewood components of individual rings, while it was not possible to achieve the same coverage when collecting two spectra using the Foss probe.
For example, these two species have distinct differences with respect to the transition from
earlywood to latewood with Douglas-fir having an abrupt transition and white fir having a gradual transition.
There is also a fluctuation in color, according to the structural regions of wood (
earlywood and latewood).
A second reconstruction of PDSI values was made for east-central Mexico by using the
earlywood width chronology derived from ancient Douglas fir trees at Cuauhtemoc la Fragua, Puebla (Figure 1, panel B).
The anatomical demarcation between rings is readily identifiable in most conifers due to formation of denser, darker latewood at the end of the growing season that contrasts with the lighter
earlywood of the following year.
In members of the Thymelaeaceae, tori are especially well-developed in the latewood, and it is thought that this tissue provides a back-up water conducting system in case the
earlywood should become embolized (Dute et al.
In the spring, the cambium produces "
earlywood," with large cells and thin cell walls.
Ring-porous woody species, with a band of wide vessels in
earlywood followed by much narrower vessels in latewood should be successful if plants maintain similar water status throughout the season.