Fluxos energéticos e reservas orgânicas de plantas forrageiras

Autores

DOI:

https://doi.org/10.33448/rsd-v11i12.34782

Palavras-chave:

Carbono; Fotossíntese; Gramíneas; Nitrogênio.

Resumo

Objetivou-se com esta revisão abordar os fluxos de energia existentes no ecossistema de pastagem, bem como o uso de reservas orgânicas por gramíneas forrageiras. A energia radiante é absorvida pelas folhas e transformada em energia química pela qual o carbono assimilado é fixado. Durante o processo de assimilação e fixação do C são realizados processos fotoquímicos e bioquímicos, que são influenciados pela presença de luz. Muitos fatores ambientais podem influenciar a capacidade das plantas em responder à estímulos sofridos. Neste sentido, fluxos energéticos dentro do sistema de pastagem estão em constante movimento para manutenção da planta forrageira. A direção do fluxo energético varia com o ambiente de crescimento da planta forrageira, uma vez que além de afetar as caraterísticas estruturais, o fator ambiente exerce controle sobre o sistema radicular. Em tese, as reservas orgânicas localizadas em raízes e colmos exercem papel crucial no crescimento de plantas pastejadas, principalmente nos primeiros dias após a desfolhação. Portanto, é importante incentivar pesquisas que envolvam os órgãos de reservas e seus padrões de acúmulo para que os resultados possam auxiliar no desenvolvimento de sistemas de pastejo sustentáveis.

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24/09/2022

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CRUZ, N. T. .; JARDIM, R. R. .; SOUSA, B. M. de L. .; SEIXAS, A. A. .; FRIES, D. D. .; PIRES, A. J. V. .; DIAS, D. L. S. .; BONOMO, P. .; RAMOS, B. L. P. .; ALCANTARA, W. Q. de .; SANTOS, A. P. da S. dos . Fluxos energéticos e reservas orgânicas de plantas forrageiras. Research, Society and Development, [S. l.], v. 11, n. 12, p. e549111234782, 2022. DOI: 10.33448/rsd-v11i12.34782. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/34782. Acesso em: 27 jul. 2024.

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Ciências Agrárias e Biológicas