Question

what is the technology to create a pure breed black rose?is cloning one of them?

Answer 1

Yes..I think..

Answer 2

its selective breeding

Answer 3

there is no rose plant that will naturally produce truly black flowers. Instead, what is usually called a black rose has very dark red blooms, often with petals tinged with an even darker shade at the edges. A black rose of this kind often produces flower buds that look almost black, but as the blooms open, the red or purple color becomes more visible. One way to grow a black rose is to water the rose plant with water mixed with black food coloring, gradually darkening the blooms. It has been reported that botanists already have created truly black roses in laboratories by manipulating the genes of rose plants, but such a rose plant has not yet been made available to flower growers or the public.
source
http://www.wisegeek.com/is-it-possible-to-grow-a-black-rose.htm