Author/Authors :
Hosseini Farahi, Mehdi Department of Horticultural Science - Yasooj Branch - Islamic Azad University - Young Researchers and Elite Club - Yasooj Branch - Islamic Azad University , Aboutalebi Jahroomi, Abdolhossein Department of Horticultural Science - Jahrom Branch - Islamic Azad University
Abstract :
In order to improve the quality of cut rose ‘Dolce Vita’, an investigation
was performed with 20 treatments, 3 replications, and 2 plants in each
replicate in a greenhouse with the open soilless culture system. The
treatments included control (distilled water), putrescine (Put) at the rates of
1, 2 or 3 mM, spermidine (Spd) at the rates of 0.5, 1 or 1.5 mM, spermine
(Spm) at the rates of 1, 2 or 4 mM, calcium sulfate (CS) at the rates of 2.5 or
5 mM, and the combined treatments of Put + CS and Spd + CS. The traits
such as stem height, flower length and diameter, stem fresh weight, vase
life, and leaf mineral uptake including N, P, K, Ca, Fe and Zn were
measured. According to the results, the combined application of polyamines
(PAs) with CS had a significant influence on increasing the parameters such
as stem height, flower length and diameter, stem fresh weight, and vase life.
The rose flowers treated with Put 2 mM + CS 2.5 mM, Spd 0.5 or 1 mM +
CS 5 mM showed the highest vase life (16.2, 16 and 16 days, respectively)
compared to other treatments. The combined application of PAs and CS enhanced
the uptake of minerals when compared to their individual application.
The plants sprayed with Spd and CS exhibited the highest Ca uptake.
Generally, the results showed that PAs and CS increased quantitative and
qualitative characteristics of rose flower ‘Dolce Vita’ in soilless culture
system due to the increased uptake of minerals. It can be inferred that the
foliar application of PAs and CS sulfate can be effective in improving the
quantitative and qualitative traits of this cultivar.
Keywords :
Putrescine , Spermidine , Spermine , Stem height , Vase life
