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

✍ Scribed by Renata Wulff; Ingrid Arias; Marisela Ponce; V. Muñoz

Publisher
Springer-Verlag
Year
1972
Tongue
English
Weight
214 KB
Volume
107
Category
Article
ISSN
0032-0935

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✦ Synopsis

A bimodal temperature response is observed in the germination of seeds in Jussiaea su]/ruticosa, 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 (15500 lux) tend to eliminate the bimodal temperature response.

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Light and temperature interaction in the photocontrol of germination of seeds inLudwigia octovalvis
✍ Renata Wulff; Mireya Briceño 📂 Article 📅 1976 🏛 Springer-Verlag 🌐 English ⚖ 388 KB

The germination response of seeds of Ludwigia octovalvis (Jacq.) (=Jussiaea suffruticosa L.; Raven, 1963), to continuous light and to various types of intermittent irradiations is determined at 25, 30, 35 and 40 ~ at different light intensities. At 25 and 40 ~ intermittent irradiations are an effect