The
irregular opening of the florets and susceptibility to chilling damages are the
major issues of cut Bird-of-Paradise flowers (Strelitzia reginae). The
salicylic acid (SA) has shown to be a promising action in reducing chilling
injury in many crops; however, its effect is not well elucidated in cut
flowers. The objective of this study was to determine the action of SA on the
development of reduction of hilling injury during storage of Bird-of-Paradise
flowers. The stems were pulsed with 200 g L-1 of sucrose in added with three
concentrations of SA (2, 4 and 6 mmol L-1) and control with only 200 g L-1 of sucrose
for 24 hours. Subsequently, the stems were transferred to containers with water
and conditioned at 5°C for chilling injury induction for 28 days. Water uptake
rate, transpiration rate, fresh mass, electrolyte leakage, activity of
peroxidase and phenolic compounds of bracts and sepals were determined weekly.
The SA reduces the transpiration rate and keeps the mass fresh until 21 days. A
reduction was observed in electrolyte leakage up to 14 days. All doses of SA
increased POD activity of the bracts while water uptake rate, POD activity of
the sepals and phenolic compound content of bracts and sepals are dependent on
dose and storage period. It is concluded that the SA applied via pulsing
reduces the chilling injury on Bird-of-Paradise cut flowers. In addition, it
reduces the transpiration rate and maintains the fresh mass of the floral stems
until 21 days. No correlation was found between POD activity and phenolic
compounds.
Author (s) Details
Ariana Mota Pereira
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Mateus de Paula Gomes
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Renata Ranielly Pedroza Cruz
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Ana Izabella Freire
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/168
Author (s) Details
Ariana Mota Pereira
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Mateus de Paula Gomes
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Renata Ranielly Pedroza Cruz
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Ana Izabella Freire
Centro de Ciências Agrárias, Universidade Federal de Viçosa, Av. PH Holfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/168
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