Changes in French bean cotyledon composition associated with modulated life-span

The onset of Phaseolus vulgaris cotyledon senescence and its characteristics were modulated by irradiance (higher or lower than standard) and by epicotyl decapitation. The cotyledon life-span of 16 d was not influenced by irradiance while decapitation prolonged the life-span to 28 d. The fresh mass...

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Bibliographic Details
Published in:Photosynthetica 1998-01, Vol.34 (3), p.377-391
Main Authors: Wilhelmova, N, Haisel, D. (Akademie Ved, Prague (Czech Republic). Ustav Experimentalni Botaniky), Wilhelm, J, Kutik, J
Format: Article
Language:English
Subjects:
AVEJENTAMIENTO
BIOMASA
BIOMASS
BIOMASSE
CAROTENOIDE
CAROTENOIDES
CAROTENOIDS
CHLOROPHYLLE
CHLOROPHYLLS
CLOROFILAS
COTILEDONES
COTYLEDON
COTYLEDONS
FREE RADICALS
LONGEVIDAD
LONGEVITE
LONGEVITY
PHASEOLUS VULGARIS
RADIACION
RADIATION
RADICAL LIBRE
RADICALES LIBRES
SENESCENCE
VIABILIDAD
VIABILITE
VIABILITY
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Summary:The onset of Phaseolus vulgaris cotyledon senescence and its characteristics were modulated by irradiance (higher or lower than standard) and by epicotyl decapitation. The cotyledon life-span of 16 d was not influenced by irradiance while decapitation prolonged the life-span to 28 d. The fresh mass of cotyledons, an indicator of organ viability, decreased in a similar manner in all non-decapitated plants, though it was relatively slower in plants grown under a low irradiance (LI). Decapitation postponed the onset of senescence until the 21st day. Expression of Chl amount per unit dry mass did not detect any changes in LI plants.
ISSN:0300-3604
1573-9058
DOI:10.1023/A:1006859917345