Data/hora: 10/06/2024 16:22:25

Provedor de dados: 	61	
País: 	Brazil	
Título: 	Chlorophyll a fluorescence of sweet potato plants cultivated in vitro and during ex vitro acclimatization	
Autores: 	Cassana,Francine F.; Falqueto,Antelmo R.; Braga,Eugenia J. B.; Peters,Jose A.; Bacarin,Marcos A.	
Data: 	2010-01-01	
Ano: 	2010	
Palavras-chave: 	Culture medium; Photon flux density; Photosystem; Sucrose.	
Resumo: 	Sweet potato (Ipomoea batatas L.) plants were cultivated in vitro in Murashige and Skoog (MS) medium with 20 and 40 g L-1 of sucrose under two different photon flux densities (21 and 60 µmol m-2 s-1). Leaves developed in vitro mostly showed high variable to maximum fluorescence ratio (F V/F M) , indicating good development of photosynthetic apparatus. This ratio decreased during leaf aging, especially in the plants cultivated in vitro on medium with higher sucrose concentration and higher photon flux. Leaves developed ex vitro showed high F V/F M ratio during whole experiment. The effective photochemical efficiency (F V'/F M') was maximum at 15th day after emergence of leaves. Photosynthetic potential rate was higher in leaves developed in vitro than in leaves originated ex vitro.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000300003	
Editor: 	Brazilian Journal of Plant Physiology	
Relação: 	10.1590/S1677-04202010000300003	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Plant Physiology  v.22 n.3 2010	
Fonte: 	info:eu-repo/semantics/openAccess