Light and Phytochrome Involvement in R. Multiflora germinati

If this has been shared, I apologize. I ran across it posted elsewhere.

Seed germination percentage of multiflora rose (Rosa multiflora Thunh.) was much higher under continuous
white light than in complete darkness. Red light was the most effective in inducing germination, and far-red light was
ineffective. Exposure to red light for 1 min increased germination; this effect was saturated at an exposure of2 min. The
red-light effect was reversed by subsequent exposure to far-red light. The results indicate that rose seeds are positively
photoblastic, and that the photoreceptor involved is most likely phytochrome.”