Physiological changes associated with Sandersonia aurantiaca flower senescence in response to sugar

Sandersonia aurantiaca is a liliaceous cut flower in which senescence is not regulated by ethylene. We stood flower stems in solutions of deionized water (control) or sucrose (2%) and monitored the pattern of senescence of individual flowers attached to the stems and quantified the amount of carbohy...

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Published inPostharvest biology and technology Vol. 12; no. 1; pp. 43 - 50
Main Authors Eason, J.R, de Vré, L.A, Somerfield, S.D, Heyes, J.A
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.1997
Subjects
Carbohydrate
carbohydrates
carotenoids
chemical constituents of plants
chlorophyll
color
cut flowers
ethylene
Flower senescence
flowers
Liliaceae
Pigments
plant proteins
Post harvest
Protein
Sandersonia aurantiaca
senescence
starch
stems
sucrose
vase life
Pigments
Carbohydrate
Sandersonia aurantiaca
Flower senescence
Protein
Post harvest
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Summary:Sandersonia aurantiaca is a liliaceous cut flower in which senescence is not regulated by ethylene. We stood flower stems in solutions of deionized water (control) or sucrose (2%) and monitored the pattern of senescence of individual flowers attached to the stems and quantified the amount of carbohydrate and protein present in the flowers. Treatment with sucrose extended the postharvest life of flower stems by delaying the senescence of individual flowers attached to the flowering stem. Flowers on sucrose-treated stems were larger, firmer and brighter orange than the control flowers. Flowers that were treated with sucrose also contained greater quantities of carotenoids, soluble and storage carbohydrates and soluble protein than the control flowers. The first visible signs of senescence occurred prior to any net loss of soluble carbohydrate or protein.
ISSN:0925-5214
1873-2356
DOI:10.1016/S0925-5214(97)00040-9