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

Author(s)

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

• Document type: Journal article
• Source: FLORA; v. 223, p. 1-10, AUG 2016.
• Web of Science Citations: 6

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 southern Brazil. Relationships between cambial activity and environmental factors (precipitation, temperature, day length) and leaf production were tested using generalized linear mixed model. Regardless the plant habit and leaf shedding patterns, cambial activity (about 5 months) corresponded to the core of the rainy season (when at least 66% of the annual precipitation had been reached), even though there was some delay or advance in the timing of cambial activity depending on the branch age or species. Cambial activity began in the dry season and ceased before the end of rainy season. Although cambial activity has been positively 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 in the branch modules of cerrado species. (C) 2016 Elsevier GmbH. All rights reserved. (AU)

• FAPESP's process: 09/17778-9 - Cambial seasonality, vascular and protective tissues in species from cerrado of São Paulo state
• Grantee: Carmen Regina Marcati
• Support Opportunities: Regular Research Grants