Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/883
High irradiance can minimize the negative effect of exogenous sucrose on the photosynthetic capacity of in vitro grown coconut plantlets
GABRIELA FUENTES ORTIZ
CARLOS ROBERTO TALAVERA MAY
Yves Desjardins
JORGE MANUEL SANTAMARIA FERNANDEZ
Acceso Abierto
Atribución-NoComercial-SinDerivadas
CARBOXYLATION EFFICIENCY
CHLOROPHYLL FLUORESCENCE
DARK RESPIRATION RATE
EX VITRO TRANSFER
LIGHT RESPONSE CURVE
NET PHOTOSYNTHETIC RATE
There is increasing evidence that the sucrose normally added to the culture medium affects negatively the photosynthetic capacity of plantlets. At the same time, however, sucrose cannot be eliminated from the medium, as it is required for normal in vitro growth. We argue that this is true only under the conventional light conditions of growth-rooms. In the present paper irradiance of growth-rooms was increased 10 times and although the sucrose-inhibitory effect was found at high sucrose concentrations, it was possible to grow coconut (Cocos nucifera L.) plantlets without sucrose. Those plantlets showed both high photosynthetic capacity and comparable in vitro growth to those grown with sucrose in the medium under conventional growth-room irradiance. Nevertheless, the best growth was achieved under mixotrophic conditions where at high irradiance and moderate sucrose concentrations plantlets accumulated 27 % more biomass than plantlets grown without sucroseunder high irradiance and 43 and 73 % more biomass than their counterparts at low irradiance with or without sucrose, respectively.
2005
Artículo
Biologia plantarum, 49(1), 7-15, 2005.
Inglés
Fuentes, G., Talavera, C., Desjardins, Y., & Santamaria, J. M. (2005). High irradiance can minimize the negative effect of exogenous sucrose on the photosynthetic capacity of in vitro grown coconut plantlets. Biologia plantarum, 49(1), 7-15.
BIOLOGÍA Y QUÍMICA
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

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