Ecological Significance of Red Light Sensitivity in Germination of Tobacco Seed

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Science  02 Jan 1959:
Vol. 129, Issue 3340, pp. 41-42
DOI: 10.1126/science.129.3340.41


The light transmission of different soil materials was measured in a Beckman spectrophotometer. The relative energy transmission was greatest at the red end of the spectrum. A seed sensitive to red light will have the capacity to germinate at nearly the maximum depth of penetration by visible light, where the risk of early desiccation is diminished.