recent advances in postharvest management of cut flower
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TRANSCRIPT
• After harvest care and handling of produce.
• In cut flower, it is to maintain the fresh look of
flowers, after plucking – retailer/end
consumer delivery.
• Cut Flowers
– Very high respiration rates– Rapidly deteriorate– Highly susceptible to damages.
So cut flowers need the utmost care
Factors affecting the quality of fresh cut flowers
• Maturity of flowers
• Food supply
• Temperature
• Water supply
6
• Tri-Miltox Forte (a fungicide containing
copper compounds 21%
and Mancozeb 20% w/w)
• Calcium chloride (CaCl2.2H2O)
• Silver nitrate (AgNO3)
• Ascorbic acid
Treatments & Replications:
Keeping Quality and Vase-life of Tuberose Cut Flowers as affected by various chemicals/preservatives. 1/2Treatments Flowers
Opened (%)Flowers Wilted (%)
Fragrance of the Flowers
Net Water Uptake (ml)
Vase life (days)
T0 14.21 c* 85.59 abc 0.62 bc 25.75 bc 7.12 abc
T1 18.79 bc 86.35 abc 1.75 a 21.50 bc 7.00 abc
T2 23.55 abc 78.18 bcd 1.50 ab 18.75 bc 7.75 ab
T3 18.71 bc 91.84 ab 1.50 ab 19.50 bc 7.25 abc
T4 17.41 bc 73.91 cde 1.50 ab 18.00 bc 7.25 abc
T5 13.84 c 70.76 de 0.50 b 34.00 ab 7.75 ab
T6 14.84 c 61.29 e 0.50 b 31.25 ab 7.75 ab
T7 7.92 c 67.56 de 0.50 b 27.50 bc 7.50 ab
T8 6.08 c 78.37 bcd 0.25 c 22.00 bc 7.50 ab
Keeping Quality and Vase-life of Tuberose Cut Flowers as affected
by various chemicals/preservatives. 2/2
Treatments Flowers Opened (%)
Flowers Wilted (%)
Fragrance of the Flowers
Net Water Uptake (ml)
Vase life (days)
T9 7.49 c 81.49 bc 0.00 c 21.25 bc 8.00 a
T10 10.62 c 92.53 a 0.00 c 19.00 bc 7.00 abc
T11 12.59 c 95.66 a 0.00 c 14.00 c 6.50 bcd
T12 8.72 c 81.58 bc 0.00 c 18.75 bc 8.00 a
T13 39.55 a 90.02 ab 0.25 c 23.25 bc 5.00 e
T14 40.75 a 87.68 abc 0.75 abc 13.75 c 6.00 cde
T15 35.19 ab 89.08 ab 0.25 c 12.50 c 5.50 de
T16 34.89 ab 87.73 abc 0.25 c 17.50 bc 6.50 bcd
T17 40.09 a 87.00 abc 1.00 abc 46.25 a 5.50 de
Conclusion:
• AgNo3, CaCl 2.2H2O and Tri-Miltox Forte treatments delayed flower
opening and also resulted in extended vase-life as compared to other
treatments (ascorbic acid treatments and standard preservative) but
stood at par with control.
• CaCl2.2H2O also proved more effective in delaying petal senescence
and/or flower wilting. However, Tri-Miltox Forte treatments maintained
the fragrance of flowers for a longer period.
• Experiment 1: Stem-end bark removal
• Experiment 2: Stem-end splitting
• Experiment 3: Stem-end crushing
• Experiment 4: Hot water scalding
• Experiment 5: Comparison of stem-end
physical treatments
• Experiment 6: Fresh vs. simulated-
handling
Results:
Materials and Methods:
• salicylic acid 0, 1, 2 and 4 mM
• Glutamine 0, 1.5 and 3 mM
• Control
• Relative Humidity 70%
• Photoperiod 14h (15 μmol m-1 S-1)
Conclusions:
• Salicylic acid and glutamin affects did show significant effect on quality
parameters and rose flower longevity. Salicylic acid and glutamin proved
more effective in delaying petal senescence and/or flower wilting.
However, result showed that Salicylic acid and glutamin treatments
maintained the vase life of flowers for a longer period.