Chromosomal location of genes for gliadin polypeptides in durum wheat Triticum turgidum L.

1983 ◽  
Vol 64 (4) ◽  
pp. 289-293 ◽  
Author(s):  
L. R. Joppa ◽  
Khalil Khan ◽  
N. D. Williams
Keyword(s):  
Durum Wheat ◽  
Chromosomal Location ◽  
Triticum Turgidum

The inheritance and chromosomal location of a gene for chocolate chaff in durum wheat

Genome ◽  
1988 ◽  
Vol 30 (2) ◽  
pp. 229-233 ◽  
Author(s):  
C. F. Konzak ◽  
L. R. Joppa
Keyword(s):  
Durum Wheat ◽  
Chromosomal Location ◽  
Triticum Turgidum ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Chromosome Substitution ◽  
Substitution Lines ◽  
D Genome ◽  
B Genome ◽  
Aneuploid Chromosome

The durum wheat (Triticum turgidum L. var. durum) cultivar 'Vic' was treated with the chemical mutagen N-methyl-N′-nitrosourea and among the M2 progeny a mutant with "chocolate chaff" (designated cc) was identified. Genetic analyses indicated that chocolate chaff is due to a single recessive gene mutation. The penetrance of the gene for chocolate chaff was environmentally influenced and varied from dark blotches on the glumes to complete coloration of culms as well as spikes. To determine the chromosomal location of the gene, the mutant was crossed with a set of 'Langdon' durum disomic substitution lines in which each of the 14 A- and B-genome chromosomes of durum wheat were replaced by their respective D-genome homoeologues. The segregation of cc was normal in all of the crosses except for those with the 7D(7A) and 7D(7B) lines. Cytogenetic analysis indicated that the gene was located on chromosome 7B, and that chromosome 7D has a gene that prevents the expression of cc when present in one or more copies. It was shown that the 'Langdon' D-genome disomic substitution lines can be used to determine the chromosomal location of genes in tetraploid wheat.Key words: Triticum turgidum, aneuploid, chromosome substitution, monosomic, cytogenetics.

The chromosomal location of a gene (msg) affecting megasporogenesis in durum wheat

Genome ◽  
1987 ◽  
Vol 29 (4) ◽  
pp. 578-581 ◽  
Author(s):  
L. R. Joppa ◽  
N. D. Williams ◽  
S. S. Maan
Keyword(s):  
Durum Wheat ◽  
Key Words ◽  
Chromosomal Location ◽  
Triticum Turgidum ◽  
Wheat Line ◽  
Pollen Mother Cells ◽  
Chromosome Arm ◽  
Pollen Nucleus ◽  
Mother Cells ◽  
Metaphase I

An aneuploid durum wheat line (Triticum turgidum L. var. durum) having 13 chromosome pairs and 2 unpaired chromosomes at metaphase I of meiosis in pollen mother cells (i.e., monosomic for chromosomes 7A and 7D) was observed to produce some progeny plants with 2n = 40 chromosomes. These aneuploid (triploid) plants were usually weak and sterile. Triploid plants also occurred in the progeny of durum plants monosomic for chromosome 7A, or in progeny of plants that were mono-telodisomic or ditelomonotelosomic for chromosome 7Aq (13 II + 1 t II or 13 II + t II + t I) but not in the progeny of plants ditelomonotelosomic for chromosome 7Ap (13 II + t II + t 1). Therefore, there is a gene(s) on chromosome arm 7Ap that prevents the production of diploid (2n) egg cells in wheat. In the absence of 7Ap, a portion of the egg cells have 26 chromosomes, which when fertilized with a pollen nucleus with 14 chromosomes, produces progeny plants with 2n = 40 chromosomes. The data also indicated that chromosome arm 7Dp probably contains a second gene that is capable of preventing the production of triploid plants. Key words: Triticum turgidum L. var. durum, polyploidy, aneuploid, triploid, monosomic.

Allelic Variations of Phytoene Synthase Genes Controlling Yellow Pigment Content in Durum Wheat (Triticum turgidum L.)

2011 ◽  
Vol 37 (5) ◽  
pp. 924-928
Author(s):  
Hui-Juan GUO ◽  
Feng CHEN ◽  
Zhong-Dong DONG ◽  
Dang-Qun CUI
Keyword(s):  
Durum Wheat ◽  
Triticum Turgidum ◽  
Yellow Pigment ◽  
Pigment Content ◽  
Phytoene Synthase ◽  
Yellow Pigment Content ◽  
Allelic Variations

The assessment of boron toxicity tolerance in F6 RILs of durum wheat [Triticum turgidum (L.) Tell. convar. durum (Desf.) Mackey]

2021 ◽  
Author(s):  
Belgin Göçmen Taşkın ◽  
Özlem Özbek ◽  
Sibel Keskin Şan ◽  
Miloudi Mikael Nachit ◽  
Zeki Kaya
Keyword(s):  
Durum Wheat ◽  
Triticum Turgidum ◽  
Boron Toxicity

scholarly journals Screening of Durum Wheat (Triticum turgidum L. subsp. durum (Desf.) Husn.) Italian Cultivars for Susceptibility to Fusarium Head Blight Incited by Fusarium graminearum

Plants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 68
Author(s):  
Gaetano Bentivenga ◽  
Alfio Spina ◽  
Karim Ammar ◽  
Maria Allegra ◽  
Santa Olga Cacciola
Keyword(s):  
Durum Wheat ◽  
Fusarium Head Blight ◽  
Fusarium Graminearum ◽  
Triticum Turgidum ◽  
Disease Incidence ◽  
Morphological Characteristics ◽  
Pcr Amplification ◽  
Conidial Suspension ◽  
Head Blight ◽  
Italian Origin

In 2009, a set of 35 cultivars of durum wheat (Triticum turgidum L. subsp. durum (Desf.) Husn.) of Italian origin was screened for fusarium head blight (FHB) susceptibility at CIMMYT (Mexico) and in the 2019–20 cropping season, 16 of these cultivars, which had been included in the Italian National Plant Variety Register, were tested again in southern and northern Italy. Wheat cultivars were artificially inoculated during anthesis with a conidial suspension of Fusarium graminearum sensu lato using a standard spray inoculation method. Inoculum was a mixture of mono-conidial isolates sourced in the same areas where the trials were performed. Isolates had been characterized on the basis of morphological characteristics and by DNA PCR amplification using a specific primer set and then selected for their virulence and ability to produce mycotoxins. The susceptibility to FHB was rated on the basis of the disease severity, disease incidence and FHB index. Almost all of the tested cultivars were susceptible or very susceptible to FHB with the only exception of “Duprì”, “Tiziana” and “Dylan” which proved to be moderately susceptible. The susceptibility to FHB was inversely correlated with the plant height and flowering biology, the tall and the late heading cultivars being less susceptible.

scholarly journals Field resistance to wheat stem rust in durum wheat ( Triticum turgidum ssp. durum ) accessions deposited at the USDA National Small Grains Collection

Crop Science ◽  
2021 ◽  
Author(s):  
Pablo D. Olivera ◽  
Worku D. Bulbula ◽  
Ayele Badebo ◽  
Harold E. Bockelman ◽  
Erena A. Edae ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Stem Rust ◽  
Triticum Turgidum ◽  
Field Resistance ◽  
Wheat Stem Rust ◽  
Small Grains

Transcend Durum wheat

2012 ◽  
Vol 92 (4) ◽  
pp. 809-813 ◽  
Author(s):  
A. K. Singh ◽  
J. M. Clarke ◽  
R. E. Knox ◽  
R. M. DePauw ◽  
T. N. McCaig ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Protein Concentration ◽  
Triticum Turgidum ◽  
Cadmium Concentration ◽  
Fusarium Head Blight Resistance ◽  
Head Blight ◽  
Canadian Prairies ◽  
Days To Maturity ◽  
Production Area ◽  
Concentration Test

Singh, A. K., Clarke, J. M., Knox, R. E., DePauw, R. M., McCaig, T. N., Fernandez, M. R. and Clarke, F. R. 2012. Transcend durum wheat. Can. J. Plant Sci. 92: 809–813. Transcend durum wheat [Triticum turgidum L. subsp. durum (Desf.) Husn.] is adapted to the durum production area of the Canadian prairies. It combines high grain yield, grain protein concentration, test weight, yellow grain and dough pigment, and low grain cadmium concentration. Transcend has strong straw, slightly more days to maturity, and improved Fusarium head blight resistance compared to Strongfield.

scholarly journals Colonization of Durum Wheat (Triticum turgidum L. var. durum) Culms Exhibiting Premature Senescence (Dead Heads) Associated with Fusarium pseudograminearum Crown Rot

Plant Disease ◽  
2017 ◽  
Vol 101 (10) ◽  
pp. 1788-1794 ◽  
Author(s):  
Noel L. Knight ◽  
Bethany Macdonald ◽  
Mark W. Sutherland
Keyword(s):  
Durum Wheat ◽  
Disease Susceptibility ◽  
Triticum Turgidum ◽  
Crown Rot ◽  
Vascular Bundles ◽  
Fusarium Crown Rot ◽  
Fusarium Pseudograminearum ◽  
Field Samples ◽  
Key Factor ◽  
Significant Disease

Fusarium crown rot is a significant disease of durum wheat (Triticum turgidum L. var. durum), which exhibits high levels of disease susceptibility. The most extreme symptom of crown rot is a prematurely senescing culm that typically fails to set grain. Individual crown rot-affected durum wheat plants displaying both nonsenescent and prematurely senescent culms were harvested to compare visual discoloration, Fusarium pseudograminearum biomass, and vascular colonization in culm sections sampled at three different heights above the crown. Field samples of EGA Bellaroi were collected at Wellcamp, QLD, in 2011, 2012, 2013, and 2014, and of Hyperno at Narrabri, NSW, in 2014. Prematurely senescent culms exhibited greater visual discoloration, F. pseudograminearum biomass, and vascular colonization than nonsenescent culms in each year they were examined. The extent of these differences varied between environments and timing of collection in each year. Vascular colonization initially occurred in xylem vessels and spread into phloem tissues as disease severity increased. The increased presence of hyphae in vascular bundles of prematurely senescing culms provides strong evidence for the hypothesis that restriction of water and nutrient movement in a diseased culm is a key factor in crown rot severity.

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