Non-destructive optical detection of pigment changes during leaf senescence and fruit ripening

Non-destructive optical detection of pigment changes during leaf senescence and fruit ripening

Reflectance spectra in the visible and near infra‐red range of the spectrum, acquired for maple (Acer platanoides L.), chestnut (Aesculus hippocastanum L.), potato (Solanum tuberosum L.), coleus (Coleus blumei Benth.), leaves and lemon (Citrus limon L.) and apple (Malus domestica Borkh.) fruits were...

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Bibliographic Details
Published in:Physiologia plantarum Vol. 106; no. 1; pp. 135 - 141
Main Authors: Merzlyak, M.N, Gitelson, A.A, Chivkunova, O.B, Rakitin, V.Y
Format: Journal Article
Language:English
Published: Copenhagen Munksgaard 01-05-1999
Subjects:
ACER PLATANOIDES
AESCULUS
AVEJENTAMIENTO
CITRUS LIMON
COLEUS
FEUILLE
FRUIT
FRUTO
HOJAS
LEAVES
MADURAMIENTO
MURISSAGE
RIPENING
SENESCENCE
SOLANUM TUBEROSUM
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Summary:Reflectance spectra in the visible and near infra‐red range of the spectrum, acquired for maple (Acer platanoides L.), chestnut (Aesculus hippocastanum L.), potato (Solanum tuberosum L.), coleus (Coleus blumei Benth.), leaves and lemon (Citrus limon L.) and apple (Malus domestica Borkh.) fruits were studied. An increase of reflectance between 550 and 740 nm accompanied senescence‐induced degradation of chlorophyll (Chl), whereas in the range 400–500 nm it remained low, due to retention of carotenoids (Car). It was found that both leaf senescence and fruit ripening affect the difference between reflectance (R) near 670 and 500 nm (R678−R500), depending on pigment composition. The plant senescing reflectance index in the form (R678−R500)/R750 was found to be sensitive to the Car/Chl ratio, and was used as a quantitative measure of leaf senescence and fruit ripening. The changes in the index were followed during leaf senescence, and natural and ethylene‐induced fruit ripening. This novel index can be used for estimating the onset, the stage, relative rates and kinetics of senescence/ripening processes.
Bibliography:F60
1999001809
istex:A02FCAE20C2164A513A33913B20E60A1068E3534
ark:/67375/WNG-9P82ZHV7-8
ArticleID:PPL106119
ISSN:0031-9317
1399-3054
DOI:10.1034/j.1399-3054.1999.106119.x