Data/hora: 10/06/2024 02:53:30

Biblioteca(s): | Embrapa Agroenergia; Embrapa Unidades Centrais.
Data corrente: | 21/02/2018
Data da última atualização: | 13/07/2018
Autoria: | DOMICIANO, G. P.; KOBAYASHI, A. K.; MOLINARI, H. B. C.; LAVIOLA, B. G.; ALVES, A. A.
Afiliação: | ADILSON KENJI KOBAYASHI, CNPAE; HUGO BRUNO CORREA MOLINARI, CNPAE; BRUNO GALVEAS LAVIOLA, CNPAE; ALEXANDRE ALONSO ALVES, CNPAE.
Título: | Photosynthetic performance of contrasting Jatropha curcas genotypes during the flowering and fruiting stages.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, v. 53, n. 1, p. 10-21, 2018.
Idioma: | Inglês
Conteúdo: | 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 hile producing flowers and fruits.
Palavras-Chave: | Capacidade fotossintética; Carboxylation efficiency; Eficiência de carboxilação; Photosynthetic capacity; Troca gasosa; Trocas gasosas.
Thesagro: | Jatropha Curcas.
Thesaurus Nal: | Biodiesel; Gas exchange.
Categoria do assunto: | --

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/172918/1/23753-125112-1-PB.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/173950/1/Photosynthetic-performnce-of-contrastin-Jatropha-curcas.pdf

Registro original: | Embrapa Agroenergia (CNPAE)

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