Effects of DCMU on long-day flowering of Lemna perpusilla 6746 and photosynthetic mutant strain 1073
- 1 December 1977
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant and Cell Physiology
- Vol. 18 (6) , 1301-1307
- https://doi.org/10.1093/oxfordjournals.pcp.a075552
Abstract
Long-day flowering of wild-type Lemna perpusilla (strain 6746) on ammonium-free medium with sucrose occurred in continuous light of low intensity (25 ft-c). In higher intensities of light, frond production was increased and flowering was reduced. The photosynthetic inhibitor DCMU inhibited frond production and promoted flowering in the presence or absence of exogenous sucrose. In the photosynthetic mutant strain 1073, the higher intensities of light inhibited frond production, but did not reduce flowering. DCMU increased mutant frond production, thus leading to increased flowering percents. The mechanism by which DCMU affects flowering and growth appears to differ from that of other flower-promoting supplements reported by Takimoto and Tanaka. The results suggest that inhibition of photosynthesis enhances flowering in long days.This publication has 1 reference indexed in Scilit:
- Experimental Control of Flowering in Lemna. I. General Methods. Photoperiodism in L. Pepusilla 6746American Journal of Botany, 1959