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Official Journal of the Japan Wood Research Society

Table 3 Two-way analysis of variance (ANOVA) for the effects of six landrace provenances and two trial sites on lateral growth, surface-released strain and wood properties averaged in each tested tree

From: Surface growth stress and wood properties of 8-year-old planted Big-leaf mahogany (Swietenia macrophylla King) from different landrace provenances and trial sites in the Philippines

Parameters

Source of variance

df

SS

MS

Sig. (p-value)

Diameter at breast height (cm)

Trial site

1

2966.62

63.15

0.000

Provenance

5

413.62

82.72

0.125

Provenance × trial site

5

425.37

85.07

0.115

Surface release strain (%)

Trial site

1

0.00

0.00

0.622

Provenance

5

0.00

0.00

0.436

Provenance × trial site

5

0.00

0.00

0.715

Xylem density (g/cm³)

Trial site

1

0.15

0.15

0.000

Provenance

5

0.03

0.01

0.182

Provenance × trial site

5

0.08

0.02

0.004

Fiber length (mm)

Trial site

1

0.31

0.31

0.000

Provenance

5

0.24

0.05

0.000

Provenance × trial site

5

0.09

0.02

0.043

Fiber width (mm)

Trial site

1

0.00

0.00

0.000

Provenance

5

0.00

0.00

0.000

Provenance × trial site

5

0.00

0.00

0.000

Vessel element length (mm)

Trial site

1

0.00

0.00

0.899

Provenance

5

0.04

0.01

0.073

Provenance × trial site

5

0.01

0.00

0.736

Vessel element width (mm)

Trial site

1

0.00

0.00

0.688

Provenance

5

0.02

0.00

0.479

Provenance × trial site

5

0.01

0.00

0.580

Microfiber angle (°)

Trial site

1

589.18

589.18

0.000

Provenance

5

260.06

52.01

0.062

Provenance × trial site

5

162.80

32.56

0.245