Sucrose-Modulated Morphogenesis in Anagallis arvensis L. |
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Authors: | Silvente, Sonia T. Trippi, Victorio S. |
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Affiliation: | Laboratorio de Fisiologia Vegetal, Facultad de Ciencias Exactas, F. y Naturales, Universidad Nacional de Cordoba Casilla de Correo 395, 5000Cordoba, Republica Argentina |
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Abstract: | Sucrose was found to have a modulating effect on the morphogenesisof Anagallis arvensis L. leaves cultured in a Murashige-Skoogmedium. Root formation and growth seem to be more independentthan other morphogenetic expressions. Roots formed without exogenoussugars at 25°C but sucrose seemed to be necessary at 32and 35°C. Sucrose at 3% improved shoot formation at 25°Cand had an inhibitory effect at 6%concentration and 35°C.Shoot growth (internode length) is inhibited by sucrose concentrationshigher than 3%. Sucrose could also replace light irradiancein regulating shoot and leaf growth. A higher sucrose concentration,than that required for roots and shoots formation, is necessaryfor flower and fruit formation, but sucrose could not replacethe photoperiod requirement for flowering in culture medium. (Received June 17, 1985; Accepted December 24, 1985) |
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