The effect of growth regulators and temperature gradient on flowering of Saintpaulia ionantha Wendl. [Conference paper]
The development of Saintpaulia ionantha grown under temperature gradient of 14 deg C day/22 deg C night has been compared with development of plants exposed to constant temperature of ca 22 deg C. Temperature gradient accelerated flowering about two weeks and brought about formation of further flowe...
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| Published in | Acta Horticulturae (Netherlands). no. 91 |
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| Main Author | |
| Format | Conference Proceeding |
| Language | English |
| Published |
1979
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| Online Access | Get more information |
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| Summary: | The development of Saintpaulia ionantha grown under temperature gradient of 14 deg C day/22 deg C night has been compared with development of plants exposed to constant temperature of ca 22 deg C. Temperature gradient accelerated flowering about two weeks and brought about formation of further flower stalks. /7-11 per plant as compared with 4-6 in control plants/. Fluctuation of temperature resulted also in bigger leaves of deep green colour. Flowering effects of growth substances such as gibberellic acid /GA(,3)/, kinetin, ethylene and of growth retardants as CCC and ALAR have been also tested. Application of GA(,3) as a foliar spray increased the number of flower stalks /10-12 as compared to 6-9 in control plants/ and diameter of the flower. The concentration of 10 mg 1/1 can be recommended for such a treatment. Other compounds have been ineffective. |
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| Bibliography: | F F00 |