Development of a complete set of Triticum aestivum-Aegilops speltoides chromosome addition lines

  title={Development of a complete set of Triticum aestivum-Aegilops speltoides chromosome addition lines},
  author={Bernd Friebe and L. L. Qi and Shuhei Nasuda and P. Zhang and N. A. Tuleen and Bikram S. Gill},
  journal={Theoretical and Applied Genetics},
Abstract Aegilops speltoides Tausch (2n = 2x = 14, SS) is considered as the closest living relative of the B and G genomes of polyploid wheats. A complete set of Triticumaestivum L. cv Chinese Spring-Ae. speltoides whole chromosomes and seven telosomic addition lines was established. A low pairing accession was selected for the isolation of the chromosome addition lines. Except for chromosomes 3S and 6S, which are presently only available as monosomic additions, all other lines were recovered… 
A set of Triticum aestivum-Aegilops speltoides Robertsonian translocation lines
The development of molecular markers specific for the S-genome chromosomes and their use in the isolation of a set of 13 compensating wheat-Aegilops speltoides RobTs were fully fertile and will facilitate mapping of genes to specific chromosome arms and also will accelerate the introgression of agronomically useful traits from Ae.
Development and characterization of a complete set of Triticum aestivum–Roegneria ciliaris disomic addition lines
FHB resistance evaluation in successive five growth seasons showed that the amphiploid, DA2Yc, DA5Yc and DA6Sc had improved FHB resistance, indicating their potential value in wheat improvement.
The study of introgressive lines of Triticum aestivum x Aegilops speltoides by in situ and SSR analyses
It was demonstrated that Spelt1 could be effectively used for the rapid identification of terminal translocations of T. aestivum × Ae.
Comparative genetic maps reveal extreme crossover localization in the Aegilops speltoides chromosomes
Compared to T. monococcum genetic maps, recombination was virtually eliminated from the proximal 50–100 cM and was localized in short distal regions, which were often expanded compared to the T. MONOCoccum maps.
Molecular Cytogenetic Identification of Wheat-Aegilops Biuncialis 5Mb Disomic Addition Line with Tenacious and Black Glumes
A novel wheat-Aegilops biuncialis 5Mb disomic addition line WA317 with tenacious and black glumes should serve as the foundation for understanding of the Triticeae domestication process and further exploitation of primitive alleles for wheat improvement.
Evolution of the S-Genomes in Triticum-Aegilops Alliance: Evidences From Chromosome Analysis
Diploid species split into two groups corresponding to Emarginata and Truncata sub-sections, which differ in the C-banding patterns, distribution of rDNA and other repeats, and a model of the S-genome evolution is suggested.
Characterization of a wheat-Psathyrostachyshuashanica Keng 4Ns disomic addition line for enhanced tiller numbers and stripe rust resistance
The 24-6-3 line of Psathyrostachys huashanica Keng carried valuable tiller and strip rust resistance gene(s) and is a promising germplasm for breeding in wheat with high levels of disease resistance and excellent agronomic traits.
Fate of Aegilops speltoides-Derived, Repetitive DNA Sequences in Diploid Aegilops Species, Wheat-Aegilops Amphiploids and Derived Chromosome Addition Lines
The presented data suggest that the genomic changes in synthetic amphiploids observed in previous studies might be caused by homoeologous recombination, which was suppressed in the amphiploid analyzed in this study.
Generation of T. aestivum x Ae. speltoides doubled amphiploids for future use in heat tolerance research, and analysis of their clonality
Wheat is increasing in importance as the global population rises; therefore, abiotic stresses adversely affecting wheat yield, such as heat stress, are of growing concern. Accessions of Aegilops
Molecular cytogenetic characterization of Aegilops biuncialis and its use for the identification of 5 derived wheat-Aegilops biuncialis disomic addition lines.
The aim of the experiments was to produce and identify different Triticum aestivum-Aegilops biuncialis disomic addition lines, and it was necessary to analyze the fluorescence in situ hybridization (FISH) pattern of Ae.


Standard karyotype of Triticum longissimum and its cytogenetic relationship with T. aestivum.
C-banding polymorphism was analyzed in 17 accessions of Triticum longissimum from Israel and Jordan, and a generalized idiogram of this species was established, and it was considered as a suitable donor of useful genes for wheat improvement.
Location of a Triticum speltoides chromosome segment conferring resistance to leaf rust in Triticum aestivum
C-banding analysis showed that the homoeologous crossing-over occurred distally to an interstitial C-band in the satellite and linkage analysis showed Lr36 to be tightly linked to the telomeric C- band.
The inheritance of genetic variation in Triticum speltoides affecting heterogenetic chromosome pairing in hybrids with Triticum aestivum
The segregation among the hybrids for mean number of chiasmata per cell showed that two gene systems in T. speltoides genotypes were involved in the promotion of heterogenetic pairing.
Genomic Instability in Wheat Induced by Chromosome 6b(s) of Triticum Speltoides.
A massive restructuring of chromosomes was observed during the production of a substitution of chromosome 6B from Triticum speltoides (Tausch) Gren, indicating that wheat genomes can be subject to uneven rates of structural chromosome differentiation in spite of being in the same nucleus.
RFLP-based maps of the homoeologous group-6 chromosomes of wheat and their application in the tagging of Pm12, a powdery mildew resistance gene transferred from Aegilops speltoides to wheat
Abstract  Genetic maps of the homoeologous group-6 chromosomes of bread wheat, Triticum aestivum, have been constructed spanning 103 cM on 6A, 90 cM on 6B and 124 cM on 6D. These maps were
Homoeologous relationships of Triticum sharonense chromosomes to T. aestivum
Normal homoeologous relationships for the seven chromosomes of the Ssh genome, and their arms, were revealed, which implies that no apparent chromosome rearrangement occurred in the evolution of T. sharonense relative to wheat.
The Molecular Basis of Genetic Diversity among Cytoplasms of TRITICUM and AEGILOPS Species. II. on the Origin of Polyploid Wheat Cytoplasms as Suggested by Chloroplast DNA Restriction Fragment Patterns.
In attempts to identify the phylogenetic donors of cytoplasm to Emmer-Dinkel and Timopheevi groups of wheat (Triticum), and the Aegilops kotschyi-Ae. variabilis complex, the restriction fragment
Genome differentiation in Aegilops. 1. Distribution of highly repetitive DNA sequences on chromosomes of diploid species.
Differences in in situ hybridization (ISH) patterns, also observed by C-banding, exist between the karyotypes of Ae.
Transfer to hexaploid wheat of linked genes for adult-plant leaf rust and seedling stem rust resistance from an amphiploid of Aegilops speltoides × Triticum monococcum
A partially dominant gene for adult-plant leaf rust resistance together with a linked, partially dominant gene for stem rust resistance were transferred to the hexaploid wheat cultivar 'Marquis' from
Molecular cytogenetic analysis of Leymus racemosus chromosomes added to wheat
The study presented here provides the first evidence of homoeology of the added L. racemosus chromosomes with wheat chromosomes using DNA markers and provides the basis for further directed chromosome engineering aimed at producing compensating wheat-L.