Effect of growth regulators on the postharvest longevity of cut flowers and leaves of the calla lily (Zantedeschia Spreng.)
2012
Beata Janowska | Anna Stanecka
The conditioning of flowers of the calla lily cultivar 'Albomaculata' in BA at concentrations of 50-150 mg×dm-3 extends their postharvest longevity by 6.2-14.5 days. An extension of the longevity of the flowers by 15 days can be obtained after the application of a solution of 8HQS with saccharose on a continuous basis. Effective in improving the longevity of leaves of cultivar 'Sunglow' is GA3 at a concentration of 400 mg×dm-3. What is more, its application at concentrations of 300-400 mg×dm-3 boosts their greenness index. GA3 at concentrations of 50 and 100 mg×dm-3 extends the postharvest longevity of leaves of the cultivar 'Black Eyed Beauty' by 18 and 11 days, respectively, while BA shortens it. A combined application of BA and GA3 inhibits chlorophyll degradation, while GA3 and a mixture of BA and GA3 inhibit protein degradation.
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