Among so many kinds of
cactus grafted
on Opuntia compressa only the Sulcorebuties stimulate the grafting
stock to bloom. The Sulcorebutias probably
produce
hormones able to activate the flowering of the Opuntia. This is
remarkable if we consider the very minute dimension of the Opuntias
utilized. The result is curious and very handsome. This is the
demonstration that the plants joined by
graft constitute a
symbiosis in
which the two parts influences one to each other, and mutually
contribute to sustain the biological process of life like:
photosynthesis, water, feeding, blooming etc. They support one to each
other in a very collaborative and active way. The two parts are one.
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