Título:	Partitioning and modeling of biomass in Caatinga legume seedlings in different water conditions.
Autoria:	BARROS, J. P. A. de SOUZA, L. S. B. SILVA, T. G. F. da MOURA, M. S. B. de SILVA, L. F. da
Afiliação:	João Paulo Alves de Barros, UFRPE - Serra Talhada, PE; Luciana Sandra Bastos Souza, UFRPE - Serra Talhada, PE; Thieres George Freire da Silva, UFRPE - Serra Talhada, PE; MAGNA SOELMA BESERRA DE MOURA, CPATSA; Luzia Ferreira da Silva, UFRPE - Serra Talhada, PE.
Ano de publicação:	2019
Referência:	Floresta e Ambiente, v. 26, n. 4, e20180348, 2019.
Conteúdo:	The accumulation of dry biomass, its partitioning and the adjustment of equations were assessed for the initial growth of Piptadenia stipulacea (Benth) Ducke and Anadenanthera colubrina (Vell.) Brenan under water availability variation. The experiment was conducted in pots arranged in a completely randomized design with three replicates. Water conditions were evaluated using the percentages of reference evapotranspiration. Samples of the biomass were taken at 10-day intervals and used for the achievement of partitioning data and model adjustments. The short period of water scarcity in the initial growth phase of P. stipulacea and A. colubrina does not affect the establishment of these species, but different water regimes alter their root growth dynamics. The A. colubrina allocates more dry matter to the roots, while P. stipulacea sends more dry matter to the aerial part. The Gaussian, Lorentzian, Log-Normal and Gompertz models had excellent adjustments for the biomass variables of the P. stipulacea species, whereas for A. colubrina, we recommend the Exponential model.
Thesagro:	Caatinga Biomassa Leguminosa
NAL Thesaurus:	Dry matter accumulation Anadenanthera colubrina
Palavras-chave:	Semiárido Deficit hidrico
ISSN:	2179-8087
Digital Object Identifier:	10.1590/2179-8087.034818
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)