The hybridization of Iris spp.
Huang Su Zhen, Gu Yin, Han Yu Lin (Jiangsu Provincial Key Laboratory for Plant Ex Situ Conservation, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014)
The interspecific and intraspecific cross breeding of Iris spp. have been carried out from 1994 to 1997. The results are as follows: Low cross compatibility has been found from two combinations of interspecific hybridization, the F 1 seedlings grew very weak and died within 6 to 8 weeks. High cross compatibility has been found from three combinations of intraspecific hybridization and their F 1 seedlings grew well; the flower color of the F 1 seedlings of Iris tectorum × I. tectorum f. alba and I. tectorum f. alba × I. tectorum is thought being controlled by single gene whereas that of I. germanica LP × I. germanica PP being controlled by multigene and the flower colour was separated. 7 new cultivars have been obtained: “Golden Purple”, “Colourful Ribbon”, “Golden Dancing Girl”, “Red Wave”, “Crystal Ball”, “Purple Cloud” and “ Purple Plate”.