Development of new wheat germplasm with strip rust resisitance II.Cytogenetic observation in hexaploid Triticale and common wheat F_1 hybrid

Cytogenetic observation was conducted at PMC MⅠ in F1 hybrid of hexaploid Triticale and common wheat.The result showed that the number of univalent at F1 PMC was larger than theoretical value in hexaploid Triticale×common wheat but was smaller than theoretical value in common wheat ×hexaploid Triticale.The number of divalent at F1 PMC was smaller than theroretical value in both of them.The number of multivalent and rod divalent at F1 PMC of common wheat ×hexapoid Triticale were larger than that of hexapoid Triticale ×common wheat.Abnormal chromosome pairing was also observed at PMC MⅠ in F1 hybrid.