Abstract: Crossbreeding was an important method of breeding.While conventional selection was more widely used in new Salvia splendens cultivars and the materials of crossbreeding were limited.So we analysed the performance in F₁ of some characters.Hoping give some guidance to the Crossbreeding of Salvia splendens.We studied the genetic performance of some characters in F₁ with 10 cross combination which was a complete diallel cross compsed of five distinct cultivar,Hongfenjiaren,Baimawangzi,Cailinghong,Chengxianggongzhu and Vista purple.Except for Vista purple,four of the parents were our own cultivars.The main characters we focused on were some traits of plant,flower and flowering period in F₁.The results showed that the plant height,stem diameter,leaf area, inflorescence diameter, inflorescence length, flower internode, flower wheel number, full-bloom period in F₁ increased obviously which their mean were 104.87%,126.01%,123.79%,111.09%,147.41%,134.32%,120.84%,94.51%.It existed a large amount of over-highparent individuals and F₁ shows significant hybrid vigor and varied from diffierent combination.F₁ color did't show any segregation and all cross combination generations showed red or purple with rose,orange, white and purple disappearing.Except for leaf area and flower internode,the other traits had mean coefficients less than 15% and showed small variability.It was necessary to choose the short-instance-inflorescence parents.More short F₁ groups origed from more short parents.While Short inflorescence crosses could also get long groups in great vigor,which give more spaces in the choose of parents inflorescence.traits.New and complex flower color,more generation choose contribute to the harvest of new color cultivar;Hongfenjiaren×Vista purple,Cailing hong×Hongfenjiaren;Vista purple×Chengxianggongzhu had perfect appearance in F₁.

Key words: Salvia splendens, Crossbreeding, Genetic performance, Analysis of hybrid vigor

CLC Number: 

• S681.03