Fenology of Lafoensia pacari St. Hill. in two vegetation types of Cerrado Mato-Grossense

Abstract

The objective of this work was to evaluate the phenology of Lafoensia pacari St. Hill. in two areas of Cerrado Matogrossense that are distinguished by phytophysiognomy: Cerradão and Cerrado restricted sense, between February 2015 to January 2017, using the Fournier index. Leaf fall, budding, flowering and fruiting phenophases were correlated with the environmental variables: maximum and minimum temperatures, relative humidity and precipitation. The fall of leaves occurred in July and August 2015, with 80 and 84% and, in 2016 in August and September with 92 and 88% in areas 1 and 2, respectively. Leaf fall intensified at the height of the dry season in both areas. Sprouting started in the rainy season in both areas. Flower buds were observed at the end of the rainy season and throughout the dry season, in areas 1 and 2, from May to July 2015. In 2016, flower buds were observed and from April to August in area 1 and in March in area 2. In area 1, the peak intensity of flower buds occurred in June 2015 and in May 2016, with 14 and 25%, respectively. The button intensity index was less than 2% in area 2. The peak anthesis intensity in area 1 occurred in May 2015 and in June 2016, with 9 and 17%, respectively. The flowering intensity index reached values below 2% in area 2. The intensity index of immature and ripe fruits showed values below 8 and 5%, respectively, in area 1. In area 2, the fruiting process was not observed. Lafoensia pacari showed intense leaf senescence at the height of the dry period. Individuals from the Cerradão area showed higher performance, mainly in reproductive phenophases.

Keywords:
Native species; Phenophases; Fournier; Mangava-brava