Data/hora: 15/06/2024 13:35:28

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 18/12/2001
Data da última atualização: | 18/12/2001
Autoria: | MARLER, T. E.; MICKELBART, M. V.; QUITUGUA, R.
Afiliação: | College of Agriculture and Life Sciences, University of Guam, University of Guam Station, Mongilao, Guam 96923.
Título: | Papaya ringspot virus influences net gas exchange of Papaya Leaves
Ano de publicação: | 1993
Fonte/Imprenta: | Mangilao, Guam: Hort. Science, v.28, n.4, p.322-324, 1993
Idioma: | Inglês
Conteúdo: | Leaves of container-grown papaya (Carica papaya L.) plants were inoculated with papaya ringspot virus (PRV) to determine its influence on dark respiration and photosynthesis. Photosynthetic capacity, apparent quantum yield, ratio of variable to maximum fluorescence from dark-adapted leaves, and photosynthetic CO2-use efficiency were reduced by PRV infection. internal CO2 partial pressure at ambient external CO2 was not affected, but leaf dark respiration was increased by PRV infection.These results suggest that reduced growth, yield, and fruit quality common in PRV-infected papaya plants is caused, at least partially, by reduced photosynthesis and increased respiration.
Palavras-Chave: | Chlorophyll fluorescence; CO2 assimilation.
Thesagro: | Carica Papaya.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (19353-1) - ADD - SP - -- - S12056 -  - S12056 - DIS