Table 4 ANOVA results from the competition experiments carried out for infructescence weight. Asterisks represent level of significance: (***) for P value < 0.001, (**) P value < 0.01, (*) P value < 0.05, (.) P value < 0.1.

From: Interspecific competition with the American Xanthium orientale L. as a possible cause of the decline of the Old-World X. strumarium L.

  

Bur weight

Df

Sum Sq

Mean Sq

F value

Pr(> F)

2022

trat

2

0.007188

0.003594

27.65

6.62e−09***

Residuals

52

0.006759

0.00013

  

2023

trat

2

0.00568

0.002842

1.55

0.216

Residuals

121

0.22168

0.001832

  
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