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    Author(s): Carmen R. Marcati; Silvia R. Machado; Diego Sotto Podadera; Natalia O. Totti de Lara; Fabio Bosio; Alex C. Wiedenhoeft
    Date: 2016
    Source: Flora - Morphology, Distribution, Functional Ecology of Plants
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: View PDF  (2.0 MB)

    Description

    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.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    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.

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    Keywords

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

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