The physiology of hyacinth bulbs. XI. The effect of gibberellic acid on the growth and flowering of variously chilled bulbs |
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| Authors: | M Saniewski J Nowak RM Rudnicki |
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| Institution: | Department of Ornamental Plants, Research Institute of Pomology, 96-100 Skierniewice Poland |
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| Abstract: | The effect of gibberellic acid, GA3, on the growth and flowering of hyacinth cultivars ‘Pink Pearl’, ‘Delft Blue’ and ‘Carnegie’, chilled in a cold room at 5°C or a garden frame for 28, 42 or 81 days, and either rooted or dry, unrooted, was investigated. GA, was applied to the basal plates of the bulbs in a lanolin paste on 10 October 1975.The growth of the inflorescence and leaves of plants originating from dry-chilled bulbs was generally the same as that of those grown from rooted plants. A similar response to GA3 treatment was observed in all cultivars. Treatment of bulbs with GA3 decreased the number of days to flowering, stimulated the growth of inflorescences and leaves, and its effect was most pronounced in the plants chilled for shorter periods. |
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