91 articles found in Crossref database. A study on some characteristics of the F2 aneuploid plants having different chromosome number in the interspecific hybridization between Triticum aestivum x Triticum durum . Wheat was one of the first cereals to be domesticated, originating in the fertile crescent around 7000 years ago. This study has employed multicolour fluorescence in situ hybridisation (MCFISH) and Diversity Arrays Technology (DArT) markers to determine the segregation of parental A, B and D genome material into the progeny of a cross between a hexaploid bread wheat (Triticum aestivum L. var. is an important crop for the human diet (e.g., pasta, couscous, bread, etc. durum wheat (Triticum turgidum L.) alien disomic addition line, DGE-1 (released in 2008), incorporating chromosome 1E of diploid wheatgrass [Lophopyrum elongatum (Host) Á. Löve; 2n = 2x = 14; EE]. Later (SAX 1923) he showed that in the Fa segregates an actual correlation existed between chromosome number and several characters. It is the second most cultivated species of wheat after common wheat, although it represents only 5% to 8% of global wheat production. By carrying 27 genes, chromosome 6A had the highest number of TtAP2s/ERFs. Triticum durum-(4n=28) Triticum vulgare-(6n=42) Triticum spelta-(6n=42) Aegilops speltoides-Goat grass/ wild wheat (2n=14) Aegilops squarrosa-(2n=14) Origin of wheat- A classical example of allopolyploidy-The development of bread wheat (Triticum aestivum) is a good example of allopolyploidy. var. bicornis 14 Sb T. longissimum (Schweinf. A ‘Langdon’ durum wheat line with a pair of 6B chromosomes from an accession of Triticum turgidum L. var. By Hakan Özkan and İbrahim Genç. In tetraploid Ae. Durum is an example of a free-threshing or naked wheat, having little or no husk around each grain. (durum wheat) belongs to the tetraploid group and is characterized by “naked” grains incomparison with the “hulled” wheats where the glumes are hard, difficult to remove and remain attached to the grain. durum) genome, which resulted in the identification of 271 genes distributed on chromosomes 1A-7B. 2-49) and a tetraploid durum wheat [T. turgidum L. spp. Chromosome number and genome(s) of the species of the tribe Triticeae (Dewey (1984); Kimber and Sears (1987)) Species Synonyms Chromosome Genome code number Triticum boeoticum L. 14 A Aegilops speltoides T. speltoides 14 S Aegilops tauschii T. tauschii, 14 D Ae. in litt., in Schweinf.) Rod bivalents have one association per bivalent instead of the two associations per trivalent and ring bivalent structures, which emphasizes the lower number of associations observed in the ABH ch R hybrid compared with H ch DR. We have annotated 124,201 gene loci distributed nearly evenly across the … Quantitative trait loci on chromosome 4B for coleoptile length and early vigour in wheat (Triticum aestivum L.) G. J. Rebetzke, R. Appels, A. D. Morrison, R. A. Richards, G. McDonald, M. H. Ellis, W. Spielmeyer and D. G. Bonnett 52(12) pp.1221 - 1234. Durum wheat with a total production of about 35 million tons is the 10th most important crops worldwide. The cyclical translocation occurred during the synthesis of the amphiploid … The alien chromosome had gene(s) conditioning sporophytic sterility (also known as the gametocidal or cuckoo effect). The genetic diversity of common wheat hybrid lines Triticum aestivum/Triticum durum and Triticum aestivum/Triticum dicoccum (2n = 42, F(6-7)) using chromosome-specific microsatellite (SSR) markers and C-staining of chromosomes was studied. The more chromosomes, the easier it is to breed varieties suitable to local soil and climate . For stable FHB resistance, the ultimate goal would be to transfer resistance from 1E into the durum chromosome 1A or 1B. Modern cultivars of domesticated Triticeae grains such as wheat (Triticum aestivum and Triticum durum), ... and Chinese Spring carrying ditelosomic additions of the long arm of Thinopyrum elongatum chromosome 4E (CS+4EL). From the above lines, disomic addition lines have now been developed. Fusarium Head Blight Reaction of Langdon Durum-Triticum dicoccoides Chromosome Substitution Lines R. W. Stack,* E. M. Elias, J. Mitchell Fetch, J. D. Miller, and L. R. Joppa ABSTRACT since the early 1980s (McMullen et al., 1997; Wilcoxson Fusarium head blight (FHB), caused by Fusarium graminearum et al., 1988; Windels, 2000). Members of the AP2 / ERF transcription factor family play critical roles in plant development, biosynthesis of key metabolites, and stress response. Except the 4D in two Aegilops tauschii accessions, the 4M in Ae. The phenotypes of the addition lines are compared with that of the original wheat, Triticum durum 'Stewart'. Triticum durum‐Haynaldia villosa amphiploid pollen treated with 1 200 rad 60 Co‐γ‐rays was pollinated to Triticum aestivum cv. ), particularly in the Mediterranean basin where ∼75% of the world's durum grain is produced.Durum wheat is primarily grown under rainfed conditions where the frequent occurrence of drought combined with heat stress is the major factor limiting grain yield (A raus et al. The pairing pattern in such type of F 1 hybrids allows the correct identification of the chromosomes involved in the trisomic condition.. By this method 25 cross combinations have been … Triticum urartu, the A-genome donor of tetraploid and hexaploid wheats, is a potential source of novel alleles for crop improvement.A fertile amphiploid between T. urartu (2 n = 2 x = 14; A u A u) and durum wheat cv ‘Yavaros’ (Triticum turgidum ssp. durum (Desf.) Histograms of fluorescence intensity (flow karyotypes) obtained after the analysis of DAPI-stained chromosomes consisted of three peaks. Details; Images (2) Synonyms (45) Accepted Names (1) References (10) Subordinate Taxa; Specimens; Distributions (10) Chromosome Counts (9) Group: Monocot Rank: species Kind: Name of a new Taxon Herbarium Placement: Lehmann, lower, A, 19 Authors: Desfontaines, René Louiche. Timilia (Venora et … Ae. Triticum durum Desf. Chromosomal DNA amplified from flow‐sorted chromosomes was sequenced to a depth of 39–58 × , assuming that chromosome sizes are similar to those estimated for Triticum durum cv. A detailed study was performed to identify TtAP2 s /ERF s in the durum wheat ( Triticum turgidum ssp. Cappelli, 2n=28, in the spring of 1976. The oldest tetraploid wheat yet discovered comes from the Neolithic of Syria, 8.9 to 8.6 thousand years ago. Thirteen wheat relatives and a Triticum durum-H. villosa amphiploid were used for oligo painting.