Abstract
The use of green, red, and far-red light-emitting diodes (LEDs) as light sources for plant physiological studies is described. LED lamps have the advantage over conventional light sources in that they are lightweight, low cost, portable, easily constructed and, more important, do not require colour filters. Using LED lamps, red/far-red reversal of germination of Grand Rapids lettuce seeds was demonstrated and the effectiveness of a green LED safelight was compared with that of a conventional filtered safelight, using extension growth of photosensitive Avena fatua L. seedlings as an indicator. The green LEDs gave comparable performance to the conventional filter-type safelight. An infra-red LED light source was also evaluated.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
