Data/hora: 02/06/2024 09:20:44

Provedor de dados: | 86
País: | Brazil
Título: | Photosynthetic performance of contrasting Jatropha curcas genotypes during the flowering and fruiting stages
Autores: | Domiciano,Gisele Pereira; Kobayashi,Adilson Kenji; Molinari,Hugo Bruno Correa; Laviola,Bruno Galveas; Alves,Alexandre Alonso.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Jatropha curcas; Biodiesel; Carboxylation efficiency; Gas exchange; Photosynthetic capacity.
Resumo: | Abstract: The objective of this work was to evaluate physiological processes in contrasting physic nut (Jatropha curcas) genotypes during the flowering and fruiting stages. Gas exchange parameters were measured using an infrared gas analyzer, and morphological traits were evaluated during each stage under natural conditions, in a randomized complete block design with five replicates. Differences in yield between J. curcas accessions were not related to photosynthetic performance, but rather to the number of inflorescences and female flowers, which are genetically determined. Moreover, the net CO2 assimilation was equivalent in both genotypes, although they produced different amount of fruit. The genotypes differed consistently in terms of carboxylation efficiency and ribulose bisphosphate regeneration. Finally, J. curcas branch growth is not impaired by the increased sink strength during fruiting, and fruit may have been actually exerting a positive effect on the net CO2 assimilation, which may have enabled plants to maintain growth while producing flowers and fruits.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000100010

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/s0100-204x2018000100002
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.53 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess