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Phenological monitoringIn the natural population, 30 plants were monitored weekly. In48 visits to the plants throughout the year, the presence of openflowers (flowering) and mature fruits (fruiting) was recorded. Thenumbers offlowers and fruits produced per inflorescence were estimated at 60 inflorescences (N = 20 in the dry and N = 40 in the rainyseason).Flowering and fruiting intensity was calculated from the average monthly production of flowers and fruits per plant (Opleret al., 1980). To test the seasonal distribution of these phenological phases, a circular distribution analysis of monthly intensityindices was performed with the Rayleigh Z-test (Zar, 1996). Therelationship between the intensity of phenophases with the variables rainfall, temperature and photoperiod was also evaluated.
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