Abstract: To create alien addition or substitution lines and transtocation lines of hexaploid triticale—common wheat, good genes of Hexaploid triticale were transfered to common wheat.Presto, as female parent was hybridized with Jinnon9190 male parent, then mitosis of root tip cells of two parents and F2 seeds were observed and karyotype analysis was carried out.The results showed that the chromosome number of two parents were all 42.the karyotype formula of Jinnongl90, Presto, and their selfcross progeny, F2-3, a double monosomic addition line were 2n=42=36m(2SAT)+6sm, 2n=42=26m(4SAT)+4M+12sm, 36m(3SAT)+4sm+1m+lm(2n=44), that karyotype types were 1A, 2 A, 1 A, respectively.Based on chromosome morphology, lengths of long arm and short arm, arm ratio(10ng/short), and relative coefficient, two added chromosomes in F2-3 cells were tentatively inferred as the severth and twenty—first chromosomes of male parent respectively.

Key words: Hexaploid triticale, Common wheat, Karyotype analysis, Double monosomic addition line

CLC Number: 

• S512.1