Spectral sensitivity of the flowering response in green and etiolated Lemna paucicostata T-101

Abstract

Light sensitivity in the reversal of the far-red inhibition of flowering in etiolated Lemna paucicostata T-101 was 10- (612 nm) to 33-fold (660 nm) higher than that of green plants. The action spectrum of this response for etiolated plants showed a peak near 660 nm, but for green plants it was near 612 nm. Thus, the effect of light on flowering is influenced greatly by the screening effect of photosynthetic pigments.