title: Cytogenetic analysis of forms produced by crossing hexaploid triticale with common wheat.
abstract: Hexaploid triticales were crossed with common wheats, and the resultant froms were selected for either triticale (AD 213/5-80) or common wheat (lines 381/80, 391/80, 393/80). The cytogenetic analysis showed that all forms differ in their chromosome composition. Triticale AD 213/5-80 and wheat line 381/80 were stable forms with 2n = 6x = 42. Lines 391/80 and 393/80 were cytologically unstable. In triticale AD 213/5-80, a 2R (2D) chromosome substitution was found. Each of the three wheat lines had a chromosome formed by the translocation of the short arm of IR into the long arm of the IB chromosome. In line 381/80, this chromosome seems to be inherited from the 'Kavkaz' wheat variety. In lines 391/80 and 393/80, this chromosome apparently formed de novo since the parent forms did not have it. The karyotype of line 381/80 was found to contain rye chromosomes 4R/7R, 5R and 7R/4R. About 15% of the cells in line 391/80 contained an isochromosome for the 5R short arm and also a chromosome which arose from the translocation of the long arms of the 5D and 5R chromosomes. About one-third of the cells in the common wheat line 393/80 contained the 5R chromosome. This chromosome was normal or rearranged. Practical applications of the C-banding technique in the breeding of triticale is discussed.
authors.affiliation: Institute of Molecular Biology, USSR Academy of Sciences, Vavilov Str. 32, 117984, Moscow B-334, USSR.
authors.forename: N S
authors.initials: NS
authors.lastname: Badaev
authors.forename: E D
authors.initials: ED
authors.lastname: Badaeva
authors.forename: N L
authors.initials: NL
authors.lastname: Bolsheva
authors.forename: N G
authors.initials: NG
authors.lastname: Maximov
authors.forename: A V
authors.initials: AV
authors.lastname: Zelenin