Influence of cambial age and climate on ring width and wood density in Pinus radiata families

Table 3 Mean and (among tree) standard deviation and range of number of rings, ring width, ring relative density, latewood density and earlywood density for four test sites

	Number of rings		RW (mm)		RD		LWD		EWD
Site	Mean ± st.dev	Range	Mean ± st.dev	Range	Mean ± st.dev	Range	Mean ± st.dev	Range	Mean ± st.dev	Range
PT1	27.8 ± 1.0	16–28	4.6 ± 0.9	2.4–7.6	0.408 ± 0.049	0.298–0.594	0.600 ± 0.053	0.447–0.884	0.306 ± 0.043	0.226–0.413
PT2	26.2 ± 2.2	12–27	5.0 ± 1.0	2.3–8.4	0.367 ± 0.034	0.286–0.522	0.500 ± 0.050	0.346–0.729	0.267 ± 0.031	0.191–0.420
PT3	15.0 ± 0.2	12–15	6.9 ± 0.8	3.8–9.5	0.342 ± 0.033	0.262–0.433	0.430 ± 0.040	0.324–0.515	0.302 ± 0.028	0.245–0.381
PT4	15.9 ± 0.2	12–16	7.2 ± 1.1	3.6–10.6	0.367 ± 0.033	0.298–0.437	0.473 ± 0.038	0.385–0.550	0.315 ± 0.027	0.260–0.370

st.dev standard deviation, RW ring width, RD ring relative density, LWD latewood density, EWD earlywood density

ISSN: 1297-966X