  The regularity of the distribution of chlorophylls content in a series of 30
cultivated plants and 75 steppe grasses was studied. The increased content of
chlorophyll and magnesium in vegetables and grains compared with greens and
steppe grasses is associated with more complex genetics of metabolism, which
has stages of flowering and fruiting. The chlorophyll content increases with
the use of LED phytoirradiators with an emission band coinciding with the first
absorption band of chlorophyll. Industrial electromagnetic fields can affect
the biosynthesis of pigments in deciduous trees, but cultivated herbaceous
plants are not sensitive to them.
