Consequences of divergent vase solutions on postharvest durability and quality of Heliconia inflorescences
2019
Malakar, M. | Acharyya, P. | Biswas, S.
Heliconia the most flourishing cut flower in the tropics owing to its charismatic form and alluringly blended hues of its bracts. To label postharvest complications and also to protract vase life for a substantial span the present experiment was designed using antithetical vase solutions of various concentrations and fresh, mature, cut spikes of nine different Heliconia species and cultivars. T5 and T6 treatment combinations contain AgNO(3) at 1500 ppm and CaCl(2) at 750 mg L(‑1) along with 8-HQC at 500 mg L(‑1) and sucrose 2% outstandingly elevated solution uptake and flower opening inside bracts principally in all species and cultivars, respectively. Untreated spikes of Heliconia psittacorum ‘Lady di’, Heliconia wagneriana, Heliconia stricta, Heliconia humilis ‘Dwarf’ and Heliconia metallica exhibited noteworthy fresh weight retention on the 8th day exceptionally while in contrast T4, T5, T7 and T3 evinced themselves unrivalled for rest of the genotypes for the same duration. To preserve bract and flower’s carotene, anthocyanin and chlorophyll pigments all treatment’s impact were truly species specific apparently. T(7) and T(9) hold GA(3) at 80 ppm and citric acid at 200 mg L(‑1) along with germicide and sucrose, respectively, besides T(5) and T(6) also yield utmost vase life being impeded senescence in all inflorescences. These identical treatments amplified the levels of catalase, peroxidase enzymatic activities and collaterally declined the lipid peroxidation on 7 days in the bract. Therefore, the present study concludes that AgNO(3), CaCl(2), GA(3) and citric acid at mentioned concentration renders magnificent beneficial effects on vase life attributes being subsisted with oxidative stress of Heliconia inflorescences.
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