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Re: Soil seed banks - germination of weed seeds




> Chapter by Baskin and Baskin (major contributors to this literature) 
> discusses one particularly intriguing aspect - that "leaf-filtered 
> sunlight inhibits germination of nondormant seeds".  I've looked into 
> this and was fascinated to realize that the ratio of red:far-red 
> light (which affects the function of phytochrome, a key developmental 
> hormone) changes upon filtration through a vegetative canopy.  In 

I assume, possibly incorrectly, that the darker green the color,
the more leaf surface area there is, the greater the change in 
the ratio of red to far red light will occur?


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