VERSILAEV HYBRIDS (DIPLOID)
Hybrids between forms of the North American Iris versicolor (2n= 72 to 108) and forms of the East Asian Iris laevigata (2n=32). Such hybrids are normally sterile at the diploid level, because the chromosome numbers of both parents are highly different. Versilaev hybrids are stable and hardy garden plants, which can be grown on drier soil than both parent groups. The size of the flowers is between those of the two parent groups.

BERLIN VERSILAEV (Reg. 1988) SSTT934 VERSILAEV PRINCESS (Reg. 2001) Versilaev-Hybriden, die durch Kreuzung jeweils zweier weißer Eltern entstanden sind

                            

VERSILAEV HYBRIDS (TETRAPLOID)
Hybrids which can be derived from the same species as diploid Versilaev  hybrids, but have double the number of chromosomes and, therefore, larger flowers. They can either be produced directly by colchicine treatment or as a result of crosses between  tetraploid parent plants. Such hybrids are fertile: in the process of  the reduction of chromosome numbers during the production of sexual cells each chromosome, due to the tetraploid structure, finds an analogue counterpart chromosome of its own kind.

STARTING VERSILAEV (Reg.1993) FOURFOLD BLUE (Reg. 1997) SSTT429

Tetra-Versilaev hybrids can be crossed back to tetraploid Iris laevigata. With such a back-cross we were for the first time successful in 1999. The three following pictures show tetraploid 3/4-Laevigata-1/4-Versicolor hybrids, produced by crossing STARTING VERSILAEV and SSTT429 back to a tetraploide Iris laevigata, that was available to us for a short time. The flowers are larger than those of the  Tetra-Versilaev parent plants.
 

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