Bird
of Paradise (Strelitzia reginae Banks) has great market potential due to its
intrinsic beauty and longer vase life. However, storage and transportation
conditions are not always adequate and may lead to negative consequences on
postharvest physiology and the quality of these flowers. Thus, this study
determined the effect of pulsing treatment containing methyl jasmonate (MeJA)
or salicylic acid (SA) in association with sucrose on the postharvest
physiology of Bird of Paradise. Two
independent experiments were carried out. In the first one, floral stems
were treated with 100, 250 and 400 μmol L-1 of MeJA plus 200 g L-1 of sucrose
for 24 h. In the second experiment, the treatments consisted of 2, 4 and 6 mmol
L-1 of SA in association with 200 g L-1 sucrose for 24 h. After the pulsing
treatment, the floral stems of both experiments were kept in containers with
water at room temperature. The analyses were performed on days 0 and 7 and the
assessment comprised: Water uptake rate, transpiration rate, fresh mass loss,
electrolyte leakage, peroxidase activity (POD) and phenolic compounds of the
bracts and sepals. MeJA and SA reduced the water uptake rate by the stems. SA
reduced transpiration rate, loss of fresh mass and phenolic compounds of sepals
on day 0. On day 7, MeJA treatment reduced electrolyte leakage and increased
POD activity. Otherwise, SA had no effect on electrolyte leakage and reduced
POD activity. These results suggest that MeJA and AS act antagonistically on
the electrolyte leakage and POD activity which might promote different effects
on the postharvest physiology of Bird of Paradise stems, such as adverse
patterns of the transpiration rate.
Author (s) Details
Ariana Mota Pereira
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Mateus de Paula Gomes
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Maria Eduarda da Silva Guimarães
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Dreice Nascimento Gonçalves
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Fernando Luiz Finger
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs 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
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Mateus de Paula Gomes
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil
Maria Eduarda da Silva Guimarães
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Dreice Nascimento Gonçalves
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa/MG, Brasil.
Fernando Luiz Finger
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH Rolfs 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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