Detection of interchromosomal translocations within the Triticeae by RFLP analysis.
Twenty-three wheat/alien addition or substitution lines were screened using restriction fragment length polymorphisms for the presence or absence of 4/5 and 4/7 reciprocal translocations in the alien chromosomes. Such translocations have previously been identified in wheat and rye. Group 4 and group 5 Aegilops umbellulata, Triticum urartu, and Thinopyrum bessarabicum chromosomes were found to carry 4/5 translocations. Evidence for a 4/7 translocation was also found in Secale montanum. The presence of the 4/5 translocations in T. urartu indicates that the translocation predates the polyploidization of wheat. The implications of these results are discussed.
King
I P
IP
Purdie
K A
KA
Liu
C J
CJ
Reader
S M
SM
Pittaway
T S
TS
Orford
S E
SE
Miller
T E
TE