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A bimodal temperature response and effect of light intensity in the photocontrol of germination of seeds in Jussiaea suffruticosa

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Summary

A bimodal temperature response is observed in the germination of seeds in Jussiaea suffruticosa, both under continuous and cyclic light treatments. Germination exhibits two maxima at around 25° C and at 40°, and a minimum in the region of 30–35°. The response depends on light intensity both under continuous and intermittent light treatments. This dependence is much more noticeable in the region of minimum germination (30°). Both preincubation in darkness at 35° and high light intensities (15 500 lux) tend to eliminate the bimodal temperature response.

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Authors and Affiliations

  1. Escuela de Biología, Universidad Central de Venezuela, Caracas, Venezuela

    Renata Wulff & Ingrid Arias

  2. Facultad de Ciencias, Universidad de los Andes, Mérida, Venezuela

    Marisela Ponce

  3. Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela

    V. Muñoz

  4. Departamento de Botánica Escuela de Biología, Universidad Central de Venezuela, Apartado 10098, Caracas, Venezuela

    Renata Wulff

Authors
  1. Renata Wulff
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  2. Ingrid Arias
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  3. Marisela Ponce
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  4. V. Muñoz
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Wulff, R., Arias, I., Ponce, M. et al. A bimodal temperature response and effect of light intensity in the photocontrol of germination of seeds in Jussiaea suffruticosa . Planta 107, 369–373 (1972). https://doi.org/10.1007/BF00386397

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  • DOI: https://doi.org/10.1007/BF00386397

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