A bimodal temperature response and effect of light intensity in the photocontrol of germination of seeds in Jussiaea suffruticosa |
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Authors: | Renata Wulff Ingrid Arias Marisela Ponce V. Muñoz |
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Affiliation: | (1) Bedford College, London |
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Abstract: | 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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