2.4. Statistical analyses
For each type of restriction (water or light), we compared the
various treatment groups. Chi-squared tests were used to compare
bud burst distributions as a function of bud location on
the stem between groups. For all other variables, groups were
compared by one-way analysis of variance (ANOVA), or by nonparametric
Kruskal–Wallis tests if the data were not normally
distributed or the condition of homoscedasticity was not satis-
fied. All statistical analyses were performed with the SAS software
(V. 9.2, SAS Institute), using the glm, npar1way and freq procedures.