1Department of Horticulture, C.C.S. University, Meerut-250004.
2Department of Botany, C.C.S. University, Meerut- 250004.
3Division of Plant Physiology, I.A.R.I., New Delhi-110012.
*Corresponding author's present addess: ASPEE College of Horticulture & Forestry, Navsari Agricultural University Navsari, (Gujarat). Email: alkapushpendra@yahoo.co.in
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Influence of silver nitrate (AgNO3), silver thiosulphate (STS), 8-Hydroxy Quinoline (8-HQ) and sucrose as vase solution on the post harvest keeping quality of gladiolus cut spikes, was studied. The treatment of antimicrobial agent, 8-HQ (200 and 300ppm) with sucrose (5%) improved the keeping quality of the cut spikes. The treatment of 300 ppm 8-HQ with 5% sucrose significantly enhanced the per cent gain in fresh and dry weight of the cut spikes as well as recorded higher reducing, non-reducing sugar content, carotenes and anthocyanin pigments in the petals of the cut spikes on 4th day after treatment (DAT). The vase solution treatment 300 ppm 8-HQ + 5% sucrose maintained higher activities of antioxidant enzymes, superoxide dismutase (SOD) and glutathione reductase (GR), reduced lipoxygenase (LOX) activity and lipid peroxidation (TBARS) in the petals of the cut spikes on 5th DAT. All these factors contributed towards better membrane integrity exhibited as high MSI, which delayed the petal senescence and significantly doubled the vase life and improved the flower quality of gladiolus cut spikes.
Anthocyanins, antioxidant enzymes, carotenes, gladiolus, membrane stability, petal senescence
