Abstract
Dark reversion of the far red-absorbing form of phytochrome, which does not occur in dry lettuce (Lactuca sativa var. Grand Rapids) seeds, appears to take place in seeds stored in a water-saturated atmosphere. The water content (approximately 70% after 10 days) of such seeds is insufficient to support germination; however the treatment enhances germination in seeds stored for 1 to 5 days, but this enhancement subsequently disappears, and the effect of extended storage (up to 28 days) is inhibiting. The half-time for dark far red-absorbing phytochrome reversion is 7 to 8 days, and at this time it can be completely reversed by exposing the seeds to a flash of red light. Storage of more than 7 to 8 days decreases red light enhancement of germination.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Butler W. L., Lane H. C., Siegelman H. W. Nonphotochemical Transformations of Phytochrome in Vivo. Plant Physiol. 1963 Sep;38(5):514–519. doi: 10.1104/pp.38.5.514. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Flint L. H. LIGHT IN RELATION TO DORMANCY AND GERMINATION IN LETTUCE SEED. Science. 1934 Jul 13;80(2063):38–40. doi: 10.1126/science.80.2063.38-a. [DOI] [PubMed] [Google Scholar]
- Taylor A. O. In vitro phytochrome dark reversion process. Plant Physiol. 1968 May;43(5):767–774. doi: 10.1104/pp.43.5.767. [DOI] [PMC free article] [PubMed] [Google Scholar]