scholarly journals STUDY OF INTROGRESSIVE LINES OF COMMON WHEAT WITH Aegilops tauschii GENETIC MATERIAL FOR RESISTANCE TO LEAF RUST

2018 ◽  
Vol 22 (1) ◽  
pp. 97-101 ◽  
Author(s):  
E. R. Davoyan ◽  
D. S. Mikov ◽  
Y. S. Zubanova ◽  
D. M. Boldakov ◽  
R. O. Davoyan ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Aegilops Tauschii ◽  
Genetic Material ◽  
Introgressive Lines

scholarly journals Study of common wheat lines with genetic material Aegilops speltoides for leaf rust resistance

2020 ◽  
Author(s):  
E. R. Davoyan ◽  
R. O. Davoyan ◽  
Y. S. Zubanova ◽  
D. S. Mikov ◽  
D. M. Boldakov
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Common Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Genetic Material ◽  
Leaf Rust Resistance ◽  
Aegilops Speltoides ◽  
Wheat Lines ◽  
Introgressive Lines

The results of evaluating introgressive lines by resistance to leaf rust and the presence of molecular markers in them linked to the known resistance genes Lr28, Lr35, Lr51, Lr10, Lr26, Lr34 are presented.

scholarly journals Using the synthetic form RS5 to obtain new introgressive lines of common wheat

2021 ◽  
Vol 25 (7) ◽  
pp. 770-777
Author(s):  
R. O. Davoyan ◽  
I. V. Bebyakina ◽  
E. R. Davoyan ◽  
Y. S. Zubanova ◽  
D. M. Boldakov ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Yellow Rust ◽  
Aegilops Tauschii ◽  
Genetic Material ◽  
Leaf Rust Resistance ◽  
Wild Relatives ◽  
Aegilops Speltoides ◽  
D Genome ◽  
Synthetic Form

The use of the gene pool of wild relatives, which have a significant reserve of genetic diversity, is of immediate interest for breeding common wheat. The creation and use of synthetic forms as “bridges” is an effective method of transferring valuable genetic material from wild relatives to cultivated wheat. For this purpose, genome addition, genome substitution and recombinant “secondary” synthetic forms have been created in the P.P. Lukyanenko National Center of Grain. The synthetic recombination form RS5 (BBAASDt ), in which the third genome consists of chromosomes of Aegilops speltoides (S) and Aegilops tauschii (Dt ), was obtained from crossing the synthetic forms Avrodes (BBAASS) and M.it./Ae. tauschii (BBAADt Dt ), in which the D genome from Ae. tauschii was added to the BBAA genomes of the durum wheat cultivar Mutico italicum. Introgression lines resistant to leaf rust, yellow rust and powdery mildew have been obtained from backcrosses with the susceptible common wheat cultivars Krasnodarskaya 99, Rostislav and Zhirovka. Twelve resistant lines that additionally have high technological characteristics of grain and flour have been selected. The cytological study (С-banding) has revealed chromosomal modifications in 6 of 8 lines under study. The rearrangements mainly affected the chromosomes of the D genome, 1D, 3D, 4D, 6D and 7D. It was found that in most cases the genetic material from the synthetic form RS5 in the studied lines was represented by substituted chromosomes from Ae. tauschii. In line 5791p17, the substitution of chromosomes 6D from Ae. tauschii and 7D from Ae. speltoides was revealed. Substitutions 4D(4Dt ), 6D(6Dt ) from Ae. tauschii and 7D(7S) from Ae. speltoides were obtained for the first time. Molecular analysis of 12 lines did not reveal effective leaf rust resistance genes, presumably present in synthetic forms of M.it./Ae. tauschii and Avrodes. It is assumed that the lines may carry previously unidentified genes for fungal disease resistance, in particular for resistance to leaf rust, from Ae. tauschii and Ae. speltoides.

scholarly journals The development and study of common wheat introgression lines derived from the synthetic form RS7

2019 ◽  
Vol 23 (7) ◽  
pp. 827-835
Author(s):  
R. O. Davoyan ◽  
I. V. Bebyakina ◽  
E. R. Davoyan ◽  
D. S. Mikov ◽  
Yu. S. Zubanova ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Resistance Genes ◽  
Yellow Rust ◽  
Genetic Material ◽  
Leaf Rust Resistance ◽  
Introgression Lines ◽  
Pcr Analysis ◽  
Aegilops Speltoides ◽  
First Time

Synthetic recombination form RS7 (BBAAUS), in which the first two genomes, A and B, originate from common wheat, and the third recombinant genome consists of Aegilops speltoides (S) and Ae. umbellulata (U) chromosomes, was obtained from crossing synthetic forms Avrodes (BBAASS) and Avrolata (BBAAUU). Resistant to leaf rust, yellow rust and powdery mildew, introgression lines have been obtained from backcrosses with the susceptible varieties of common wheat Krasnodarskaya 99, Fisht and Rostislav. PCR analysis showed the presence of amplification fragments with marker SCS421 specific for the Lr28 gene in the line 4991n17. The cytological study (С-banding and FISH) of 14 lines has revealed chromosomal modifications in 12 of them. In most cases, the lines carry translocations from Ae. speltoides, which were identified in chromosomes 1D, 2D, 3D, 2B, 4B, 5B and 7B. Also, lines with the substituted chromosomes 1S (1B), 4D (4S), 5D (5S) and 7D (7S) were identified. Lines that have genetic material from Ae. speltoides and Ae umbellulata at once were revealed. In the line 3379n14, translocations in the short arm of chromosome 7D from Ae. umbellulata and chromosomes 5BL, 1DL, 2DL from Ae. speltoides were revealed. The line 4626p16 presumably has a translocation on the long arm of chromosome 2D from Ae. umbellulata and the T7SS.7SL-7DL translocation from Ae. speltoides. The T1DS.1DL-1SL and T3DS.3DL-3SL translocations from Ae. speltoides, and T2DS.2DL-2UL and T7DL.7DS-7US from Ae. umbellulata have been obtained for the first time. These lines may carry previously unidentified disease resistance genes and, in particular, leaf rust resistance genes from Ae. speltoides and Ae. umbellulata.

Leaf rust resistance in common wheat varieties and lines from the collection of the Vavilov Plant Industry Institute carrying alien genetic material

2015 ◽  
Vol 5 (3) ◽  
pp. 233-241 ◽  
Author(s):  
A. S. Sadovaya ◽  
E. I. Gultyaeva ◽  
O. P. Mitrofanova ◽  
E. L. Shaidayuk ◽  
A. G. Hakimova ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Rust Resistance ◽  
Genetic Material ◽  
Leaf Rust Resistance ◽  
Plant Industry ◽  
Wheat Varieties

scholarly journals Development and Characterization of Synthetic Hexaploid Wheat for Improving the Resistance of Common Wheat to Leaf Rust and Heat Stress

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 18
Author(s):  
Hai An Truong ◽  
Hyeri Lee ◽  
Masahiro Kishii ◽  
Suk Whan Hong ◽  
Hojoung Lee
Keyword(s):  
Heat Stress ◽  
Leaf Rust ◽  
Common Wheat ◽  
Hexaploid Wheat ◽  
Aegilops Tauschii ◽  
Synthetic Hexaploid Wheat ◽  
Synthetic Hexaploid ◽  
Shock Proteins ◽  
Wheat Lines

Synthetic hexaploid wheat (SHW) is a valuable resource for breeding because it possesses more desirable traits, such as better yield and abiotic and biotic stress tolerance than common wheat. In this study, our group developed a SHW line, named ‘SynDT’, which has markedly better characteristics than Korean bread wheat ‘Keumkang’. The SynDT line is thermotolerant as it rapidly expresses heat shock proteins under heat stress. In addition, this line exhibits resistance to leaf rust by inducing the expression of antifungal enzymes, mainly chitinase, along with the rapid and high expression of pathogen-related genes. Moreover, it possesses the favorable traits of its parent wheat lines Triticum durum #24 and Aegilops tauschii #52. Therefore, the SynDT wheat line can be used as a breeding material for improving local common wheat cultivars.

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