Effect of cold storage duration, harvesting stage and post harvest treatments on vase life of Solidago canadensis cv. "Tara" cut stems [electronic resource].

Includes references.

Postharvest treatments and dry cold storage periods can delay senescence and improve vase life of Solidago canadensis cv. "Tara" cut stems at different harvest stages. This investigation was carried out during 2010 and 2011 seasons on Solidago canadensis cv. "Tara" cut stems in Plant Production Department, faculty of agriculture Saba Basha, aiming to study the effect of pulsing cut stems with five concentrations of gibberellic acid (GA3 ) at zero, 0.25, 0.50, 0.75, 1.00 mM, and five concentrations of silver thiosulphate (STS) at zero, 1.00, 1.50, 2.00, 2.50 mM, before dry cold storage at seven periods (control- 1,2,3,4,5,6 weeks) at two harvest stage of florets opening H1 30% and H2 10%.Results revealed that GA3 and STS at 1.00 and 2.00 mM., respectively, achieved the best results for vase life. Besides, the cold storage period up to 6 weeks followed by possible days of vase life were achieved by using GA3 (1.00 mM) and STS (2.00 mM) for the two harvest stage. Number of days from starting the vase life to full opening of the flowers and number of days after full opening of the flowers to fading increased by increasing the concentrations of pulsing solutions and decreased by increasing the dry storage durations.

Summary in Arabic.

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