Phytochrome and Seed Germination. IV. Action of Light Sources With Different Spectral Energy Distribution on the Germination of Tomato Seeds

Z Yaniv; A L Mancinelli

doi:10.1104/pp.43.1.117

Phytochrome and Seed Germination. IV. Action of Light Sources With Different Spectral Energy Distribution on the Germination of Tomato Seeds

Plant Physiol. 1968 Jan;43(1):117-20. doi: 10.1104/pp.43.1.117.

Authors

Z Yaniv¹, A L Mancinelli

Affiliation

¹ Department of Biological Sciences, Columbia University, New York, New York 10027.

Abstract

Germination of tomato seeds exposed to a single, saturating irradiation from light sources of different spectral energy distribution seems to be dependent upon the photostationary P(FR)/P(R) ratio established by the irradiation. Germination of tomato seeds exposed to prolonged irradiations from the same light sources does not seem to be controlled solely by the P(FR)/P(R) ratio induced and maintained by the irradiation.