Besides ABA, another inhibitor, para-coumaric acid (PCA), was isolated in peach fruit (Prunus persica Batsch cultivar 'Andross'). The nature of this inhibitor was established by combined gas chromatography-mass spectrometry. Its level was determined spectrophotometrically and confirmed by wheat coleoptile and cress seed assay on mesocarp and seed of fruits classified as to abscission potential on the basis of their growth rate during Stage I. Levels of inhibitors were parallel in exo-mesocarp and seed. Extracts from fruit with high abscission potential contained a significantly higher amount of free PCA than did those with low or intermediate potential. The bound PCA was higher in fruit with high or intermediate abscission potential and its level seems related to the pit hardening, since the highest concentrations were found during Stage II of fruit development. © 1982.

Levels of extractable para-coumaric acid in the exomesocarp and seed of persisting and abscising peach fruit

RAMINA, ANGELO;
1982

Abstract

Besides ABA, another inhibitor, para-coumaric acid (PCA), was isolated in peach fruit (Prunus persica Batsch cultivar 'Andross'). The nature of this inhibitor was established by combined gas chromatography-mass spectrometry. Its level was determined spectrophotometrically and confirmed by wheat coleoptile and cress seed assay on mesocarp and seed of fruits classified as to abscission potential on the basis of their growth rate during Stage I. Levels of inhibitors were parallel in exo-mesocarp and seed. Extracts from fruit with high abscission potential contained a significantly higher amount of free PCA than did those with low or intermediate potential. The bound PCA was higher in fruit with high or intermediate abscission potential and its level seems related to the pit hardening, since the highest concentrations were found during Stage II of fruit development. © 1982.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2500061
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