Predicting when and where the Northern Lights will be visible is a challenging game and can partially be predicted by ...

This is a preview. Log in through your library . Abstract We demonstrate that two rhodopsins, identified from cDNA sequences, function as low- and high-light-intensity phototaxis receptors in the ...

Blue spruce (Picea pungens Engelm.) seedlings grow continuously when exposed to photoperiods exceeding 16 hours and enter dormancy within 4 weeks under photoperiods of 12 hours or less. Dormancy was ...