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Table 3 Analysis of variance for A. senegal at Dahra in 2008 (age 14) and 2017 (age 23) (model 2)

From: Survival and growth of Acacia senegal (L.) Wild. (Senegalia senegal (L.) Britton) provenances depend on the rainfall at the site of origin

Source

df

SS

MS

F

P

Survival rate

  Provenance

14

0.5702

0.0407

4.11

< 0.0001***

  Year

1

0.1359

0.1359

13.72

0.0004**

  Provenance × year

14

0.0857

0.0061

0.62

0.8431

Height

  Provenance

14

23.2206

1.6586

3.47

0.0002***

  Year

1

0.1605

0.1605

0.34

0.58300

  Provenance × year

14

2.8037

0.2003

0.42

0.96440

Diameter

  Provenance

14

336.62

24.044

5.56

< 0.0001***

  Year

1

250.22

250.221

57.86

< 0.0001***

  Provenance × year

14

76.75

5.482

1.27

0.2464

  1. Significance levels: * P<0.01, ** P<0.001, *** P<0.0001
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Annals of Forest Science

ISSN: 1297-966X