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GrainGenes Reference Report: TAG-91-248

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Reference
TAG-91-248
Title
Standard karyotype of Triticum searsii and its relationship with other S-genome species and common wheat
Journal
Theoretical and Applied Genetics
Year
1995
Volume
91
Pages
248-254
Author
Friebe B
Tuleen NA
Gill BS
Abstract
C-banding polymorphism was analyzed in 14 accessions of Triticum searsii from Israel, and a generalized idiogram of the species was established. One accession was homozygous for whole arm translocations T1S^s^S . 4S^s^S and T1S^s^L . 4S^s^L. C-banding analysis was also used to identify 7 T. aestivum cv 'Chinese Spring' - T. searsii disomic chromosome addition lines, 14 ditelosomic chromosome addition lines, 21 disomic whole chromosome, and 31 ditelosomic chromosome substitution lines. The identity of these lines was further confirmed by meiotic pairing analysis. Sporophytic and gametophytic compensation tests were used to determine the homoeologous relationships of the T. searsii chromosomes. The results show that the T. searsii chromosomes do not compensate well for their wheat homoeologues. The C-banding patterns of T. searsii chromosomes are distinct from those of other S-genome species and from the B-genome donor species of T. turgidum and T. aestivum.
Keyword
B genome
[ Show all 6 ]
Image
C-bands of Ae. searsii - 1
C-bands of Ae. searsii - 2
C-bands of CS - Ae. searsii