de Lara, Idemauro Antonio Rodrigues and Taconeli, Cesar Augusto and de Andrade Moral, Rafael and Hinde, John and Voigt, Vanessa and de Freitas, Sílvia Maria
(2020)
A longitudinal study of sweet orange flowering with grouped
count data.
Acta Scientiarum. Agronomy, 42 (1).
pp. 1-10.
ISSN 1679-9275
Abstract
The orange variety “x11”, which is a spontaneous mutant of the sweet orange, has a short
juvenile period with early flowering. The data used in this paper are from a randomized design experiment
that aimed to assess the plants' flowering characteristics when grafted onto two different varieties of
lemon rootstock. The plants were pruned in each of the four seasons, and on each pruning occasion, the
number of branches on each plant was counted and classified into four mutually exclusive flowering
categories. The data presented large variability and many zeros. The statistical analysis included the use
of generalized linear mixed models with a Bayesian approach. The results showed that flowering is not
equal over the seasons, i.e., there are significant differences in the classification of the branches across
the four seasons and the two varieties, with interactions between seasonal and branch effects.
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