VARIETAL RESPONSES OF CUT FLOWERS TO DIFFERENT ANTIMICROBIAL AGENTS OF BACTERIAL CONTAMINATION AND KEEPING QUALITY

Cut flowers of Chrysanthemum morifolium Forester CV. and Calendula officinalis L. were treated with 4 agents, i.e. pulsed with Septocid Solution (Cetrimide 1.50 % + Dichloroxylenol 1.875 %) for 2, 4 and 6 min. or held continuously in different solutions of 8-Hydroxy Quinoline Sulfate (8-HQS) at 100, 200 and 400 ppm, Ampicillin antibiotic [6-(-D-phenyl glycylaminol penicillanic acid)] at 100, 150 and 200 ppm or Silver nitrate at 10, 20 and 30 ppm.

With Chrysanthemum flowers, 8-Hydroxy Quinoline sulfate at 100 ppm increased vase life.
Ampicillin at 100 ppm achieved greater maximum fresh weight.
The cut flowers held in the solutions containing 8-Hydroxy uinoline sulfate at 200 ppm had the highest absorption rate.
The lowest water loss was with 8-HQS and Ampicillin solutions at 100 ppm, but the highest water loss was with septocid treatment for 6 min.
Cut flowers held in 8-Hydroxy Quinoline sulfate at 200 ppm and solution containing Ampicillin at 150 ppm had better water balance for a longer period.
Septocid, 8-Hydroxy Quinoline sulfate, Ampicillin antibiotic and silver nitrate agents were effective in controlling bacterial growth.
While, with Calendula flowers, the cut flowers held in solution with 8-Hydroxy Quinoline sulfate at 400 ppm had longer vase life.
The cut flowers held in the solution containing 8-Hydroxy Quinoline sulfate at 200 ppm achieved greater maximum fresh weight and had a greater absorption rate and flowers held in solution containing 8-Hydroxy Quinoline sulfate at 200 ppm had better water balance for a longer period.
Different antimicrobial agents were effective in controlling bacterial growth.

International Symposium on Postharvest Treatment of Horticultural Crops

H.A.A. Hussein

https://doi.org/10.17660/ActaHortic.1994.368.11