Physiological Characterization of Flower Senescence in Long Life and Ephemeral Ibiscus (Hibiscus rosa-sinensis L.)
Articolo
Data di Pubblicazione:
2007
Citazione:
Physiological Characterization of Flower Senescence in Long Life and Ephemeral Ibiscus (Hibiscus rosa-sinensis L.) / A. Trivellini, P. Vernieri, A. Ferrante, G. Serra. - In: ACTA HORTICULTURAE. - ISSN 0567-7572. - 755:(2007), pp. 457-464.
Abstract:
The most part of hibiscus plants produces short life flowers that last one day.
Therefore they are called ephemeral and flower senescence is usually associated with
petal in-rolling and abscission. Flowers are well shaped and different organs can be
easily separated, these characteristics make the hibiscus a good model system for
flower senescence studies.
The aim of this work was to identify metabolic differences and hormonal
profiles in petals of different flowers of hibiscus plants that show different flower
longevity. Different hibiscus (Hibiscus rosa-sinensis L.) plants were screened under
controlled environment for identifying different clusters. Among the plants screened
the physiological studies were performed on the following cultivars: ‘Caribbean
Tricolour’, ‘Caribbean Dark Pink’, ‘Caribbean Pink’, ‘Caribbean White’,
‘Caribbean White eye’, ‘Porto’ and ‘La France’. Flowers were detached from
different clusters and placed in postharvest room for vase life determination. Flower
harvesting was performed in the morning usually between 9:00 and 12:00 a.m.
Detached flowers were placed in deionised water. Ethylene production, abscisic acid
content, anthocyanins, total phenols and carotenoids were measured. All data were
analysed and correlated with flower longevity. The ephemeral flowers lasted 12-18 h,
while the longest flower life was 3-4 days in ‘Porto’. The ethylene production and
ABA content were inversely proportional to flower longevity. In fact the longest
flower life was observed in hibiscus plants that had the lowest ethylene production.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
ABA; Anthocyanins; Carotenoids; Ethylene; Phenols; Post-production
Elenco autori:
A. Trivellini, P. Vernieri, A. Ferrante, G. Serra
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