Efecto de la cianimida hidrogenada en la semilla de café (Coffea arabica) cv. caturra. 2. Influencia sobre el metabolismo germinativo
The interaction of several immersion periods and doses of hydrogen cyanamide (HC), on its own and in combination with giberellic acid (AG3), was evaluated on coffee seeds with and without endosperm. Concentrations of HC of 0.0075 and 0.001 percent (50 percent a.i.) and immersion periods of 5 and 20 min proved to be useful in promoting seed germination. The levels of CO2 in sealed flasks for one or more days showed gradual diminishing values of this gas during the first 8 days. In the presence of HC, CO2 values were lower. Higher values were found after 10 days. In the case of seed stored for 5 months the lowest values were found after 10 and 12 days. These lowest values coincide with the end of the germination phase sensu stricto. The interaction of HC and AG3 promoted germination, specially after long immersion periods. The effect of HC and water on germination of coffee seeds, as well as their interaction with AG3, are discussed.
| Main Authors: | , , |
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| Format: | biblioteca |
| Published: |
1992
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| Subjects: | COFFEA ARABICA, CATURRA, CIANAMIDAS, SEMILLA, GERMINACION, METABOLISMO, ABONOS NITROGENADOS, PERGAMINO, |
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