Effects of antimicrobial compounds on the postharvest life of
rose.
Tiwari, A. K. , Ranvir Singh
Department of Horticulture, G.B. Pant University of Agriculture &
Technology, Pantnagar - 263 145, Udham Singh Nagar, Uttaranchal,
India.
The effects of 8-hydroxyquinoline citrate (HQC), 8-hydroxyquinoline
(HQ), CoSO4 and Al2(SO4)3 at 200 ppm each, incorporated into the vase
solution containing 4% sugar and 200 ppm citric acid, on the vase life
of rose cv. Superstar were studied. Weight gain was greatest on the 3rd
day in HQC (3.75 g) and CoSO4 (3.70 g) solutions, and lowest in
distilled water (2.00 g). Weight loss at senescence was greatest in
flowers kept in distilled water (1.99 g), HQ (1.85 g) and HQC (1.75 g)
solutions, and lowest in flowers maintained in Al2(SO4)3 solution (1.50
g). The antimicrobial agents were equally effective in enhancing flower
diameter. The greatest uptake of solution was observed in flowers kept
in HQC (24.0 ml) and CoSO4 (23.0 ml) solutions, whereas the lowest was
observed in flowers maintained in distilled water (14.00 ml). Flowers
in HQC and CoSO4 solutions had the longest vase lives (15.20 and 14.56
days, respectively). Flowers kept in distilled water had the shortest
vase life (10.00 days). HQ and Al2(SO4)3 had similar effects on weight
gain and solution uptake. Among the antimicrobial compounds, HQC and
CoSO4 were the most effective in the enhancement of the vase life of
rose cv. Superstar. |
