Cambial activity in dry and rainy season on branches from woody species growing in Brazilian Cerrado

Carmen R. Marcati; Silvia R. Machado; Diego Sotto Podadera; Natalia O. Totti de Lara; Fabio Bosio; Alex C. Wiedenhoeft

doi:10.1016/j.flora.2016.04.008

Treesearch

Cambial activity in dry and rainy season on branches from woody species growing in Brazilian Cerrado

Formally Refereed

Authors:

Carmen R. Marcati, Silvia R. Machado, Diego Sotto Podadera, Natalia O. Totti de Lara, Fabio Bosio, Alex C. Wiedenhoeft

Year:

2016

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1016/j.flora.2016.04.008

Source:

Flora - Morphology, Distribution, Functional Ecology of Plants

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Download (PDF 2.72 MB): https://research.fs.usda.gov/download/treesearch/52583.pdf

Abstract

Seasonal cambial activity was investigated in one- to three-year-old branch modules (branch constructional units) of ten woody species from cerrado sensu stricto, a savanna-like ecosystem, of southernBrazil. Relationships between cambial activity and environmental factors (precipitation, temperature,day length) and leaf production were tested using generalized linear mixed model. Regardless the planthabit and leaf shedding patterns, cambial activity (about 5 months) corresponded to the core of the rainyseason (when at least 66% of the annual precipitation had been reached), even though there was somedelay or advance in the timing of cambial activity depending on the branch age or species. Cambial activ-ity began in the dry season and ceased before the end of rainy season. Although cambial activity has beenpositively correlated with day length, precipitation, temperature, and budding for all species, day length,among the assessed factors, seems to be the best predictor of onset and cessation of cambial activity inthe branch modules of cerrado species.

Keywords

Budding, Cambium, Savanna-like ecosystem, Photoperiod, Precipitation, Temperature

Citation

Marcati, Carmen R.; Machado, Silvia R.; Podadera, Diego Sotto; Lara, Natalia O. Totti de; Bosio, Fabio; Wiedenhoeft, Alex C. 2016. Cambial activity in dry and rainy season on branches from woody species growing in Brazilian Cerrado. Flora - Morphology, Distribution, Functional Ecology of Plants. 223: 1-10.